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Tarikh shamsi b miladi refers to the conversion process between the Solar Hijri (Shamsi) calendar—predominantly used in Iran and Afghanistan—and the Gregorian (Miladi) calendar used globally. Understanding this conversion is essential for international travel, business, and official documentation for those moving between Persian-speaking regions and the rest of the world. The Two Calendar Systems
The process of converting a (Solar Hijri) date to (Gregorian) involves bridging two distinct ways of measuring time—one rooted in astronomical observation and the other in a fixed-rule cycle. The Conversion Logic
Converting between these two systems generally follows a simple offset, but requires careful attention to the start of the solar year: Year Offset : To find the Gregorian year, you generally add (if the date is between Farvardin and Azar) or (if it is between Dey and Esfand) to the Shamsi year. The Pivot Point : The Solar Hijri year begins on the Vernal Equinox (usually March 20 or 21), which marks the first day of Month Structure
: The first six months of the Shamsi calendar (Farvardin to Shahrivar) have , the next five (Mehr to Bahman) have , and the final month (Esfand) has (or 30 in leap years). Online Tools for Instant Conversion
For precise calculations, especially those involving leap years, the following digital converters are highly reliable: General Purpose Taghvim.com
are the standard web tools for quick Iranian-to-Gregorian shifts. Mobile Apps Persian Calendar app on Google Play
provides a dual-view interface for tracking both calendars simultaneously. Technical Tools : If you need to automate this in Excel or programming, SourceForge PyPI's shamsi-datetime offer libraries and scripts for developers. Quick Reference Example As of today, April 16, 2026 , the corresponding Persian date is 27 Farvardin 1405
تبدیل تاریخ Iranian Date Converter 2026 - Taghvim.com
For more accurate and quick conversions, you can use online date converters or refer to calendars that provide both Solar Hijri and Gregorian dates side by side.
Keep in mind that the Solar Hijri calendar and Gregorian calendar have different leap year rules, which can affect conversions over longer periods.
Title: Understanding the Difference: Tarikh Shamsi vs Miladi
Introduction
In our daily lives, we often take for granted the way we measure time. We wake up every morning, check our clocks, and plan our days accordingly. But have you ever stopped to think about the calendar system we use? In many parts of the world, especially in Iran and Afghanistan, there are two widely used calendar systems: Tarikh Shamsi (Persian Solar Calendar) and Miladi (Gregorian Calendar). In this blog post, we'll explore the differences between these two calendars and their significance.
What is Tarikh Shamsi (Persian Solar Calendar)?
The Tarikh Shamsi, also known as the Persian Solar Calendar, is a solar calendar used in Iran, Afghanistan, and Tajikistan. It is based on the solar year, which is the time it takes the Earth to orbit the sun. This calendar was introduced in 1925 and is a modified version of the ancient Persian calendar.
The Tarikh Shamsi has 12 months, with each month beginning on the day of the equinox or the solstice. The months are:
What is Miladi (Gregorian Calendar)?
The Miladi calendar, also known as the Gregorian Calendar, is the most widely used calendar system in the world. It was introduced by Pope Gregory XIII in 1582 and is a solar calendar that is based on the Earth's orbit around the sun.
The Miladi calendar has 12 months, with each month having a specific number of days:
Key differences between Tarikh Shamsi and Miladi
Here are the main differences between the two calendars:
Why is Tarikh Shamsi important?
The Tarikh Shamsi is an essential part of Iranian and Afghan culture and history. It is used to:
Conclusion
In conclusion, the Tarikh Shamsi and Miladi calendars are two distinct calendar systems used in different parts of the world. While the Miladi calendar is widely used globally, the Tarikh Shamsi calendar holds significant cultural and historical importance in Iran, Afghanistan, and Tajikistan. Understanding the differences between these calendars can help us appreciate the diversity of human experience and cultural expression.
The conversion from Tarikh Shamsi (Solar Hijri) to Miladi (Gregorian) is a common need for scheduling, official documentation, and history. Because the Solar Hijri year usually begins on the vernal equinox (around March 21), the relationship between the two calendars shifts slightly depending on whether the date falls before or after the Iranian New Year (Nowruz). 1. General Conversion Logic
To convert a Solar Hijri (SH) year to a Gregorian (AD) year, use these simple rules of thumb:
For the first 9 months of the SH year (Farvardin to Azar):Add 621 years to the Solar year.Example: 1403 SH + 621 = 2024 AD.
For the last 3 months of the SH year (Dey to Esfand):Add 622 years to the Solar year.Example: 1403 SH + 622 = 2025 AD. 2. Month Equivalencies
While the exact start days can vary by one day due to leap years, the general alignment is as follows: Solar Hijri Month Approximate Gregorian Start Farvardin Ordibehesht Khordad Tir Mordad Shahrivar Mehr September 23 Aban October 23 Azar November 22 Dey December 22 Bahman January 21 Esfand February 20 3. Key Differences Between the Calendars
Year Zero: The Solar Hijri calendar begins with the Hijra (migration) of Prophet Muhammad in 622 AD.
Accuracy: The Solar Hijri calendar is an astronomical calendar, meaning it is tied to the actual movement of the earth around the sun, making it one of the most accurate seasonal calendars in the world.
Leap Years: Both calendars use leap years, but the Solar Hijri leap year occurs every 4 or 5 years based on complex astronomical observations, whereas the Gregorian calendar follows a fixed mathematical rule (every 4 years, with century exceptions). 4. How to Convert Specific Dates
If you need an exact date (e.g., 15 Mehr 1350), it is best to use a digital converter to account for leap year shifts. Popular tools include: Time.ir: The standard reference for Iranian time and dates.
Calendar.az: A common tool for Persian and Gregorian conversions.
Here is comprehensive content regarding the conversion and history of the Tarikh Shamsi (Solar Hijri) and Tarikh Miladi (Gregorian) calendars.
Add 621 from Nowruz to the end of autumn; add 622 from the start of winter until Nowruz.
Converting a date from the Solar Hijri (Shamsi) calendar to the Gregorian (Miladi) tarikh shamsi b miladi
calendar involves understanding the structural differences between the two systems. 1. Fundamental Differences Solar Hijri (Shamsi):
Used primarily in Iran and Afghanistan, it is a solar calendar beginning on the vernal equinox (usually March 20 or 21). Gregorian (Miladi): The internationally standard calendar used globally. Year Offset:
The Shamsi year 1 corresponds to the migration of Prophet Muhammad (the Hijra) in 622 CE. Generally, you add (for the first 9 months of the Gregorian year) or
(for the last 3 months) to the Shamsi year to get the Gregorian year. 2. Manual Conversion Formula To estimate the Gregorian year from a Shamsi year: If the Shamsi date is between Farvardin 1 and Dey 10 (roughly March 21 to December 31): Gregorian Year = Shamsi Year + 621 If the Shamsi date is between Dey 11 and Esfand 29/30 (roughly January 1 to March 20): Gregorian Year = Shamsi Year + 622 3. Month Correspondence
The Shamsi year has 12 months, with the first six having 31 days and the next five having 30 days. The last month, Esfand, has 29 days (30 in leap years). Shamsi Month Gregorian Start (approx.) Ordibehesht September 23 October 23 November 22 December 22 January 21 February 20 4. Reliable Conversion Tools
Because of leap years in both calendars, precise manual conversion is difficult. It is recommended to use specialized digital tools: Taghvim.com
provides a high-precision converter for current and historical dates. Kodoom.com Tools
offers a bidirectional converter (Miladi to Shamsi and vice versa). Parstimes Persian Calendar
includes a detailed table and converter for multiple calendar systems, including Julian and Hebrew. Kodoom.com or learn more about the leap year rules of the Jalali calendar? Miladi to Shamsi Convertor - Kodoom.com
Converting a date from the (Solar Hijri) calendar to the (Gregorian) calendar requires a precise calculation because the calendars have different starting points and leap year rules. The Solar Hijri year 1404 corresponds to the Gregorian year 2025/2026. Quick Conversion Guide To convert a Shamsi date to Miladi, you generally add
, depending on whether the date falls before or after the Iranian New Year (Nowruz, typically March 21). The Journal of Specialised Translation Shamsi Season Shamsi Months Gregorian Equivalent (Approx.) Farvardin, Ordibehesht, Khordad March 21 – June 21 Tir, Mordad, Shahrivar June 22 – Sept 22 Mehr, Aban, Azar Sept 23 – Dec 21 Dey, Bahman, Esfand Dec 22 – March 20 *Esfand has 29 days in common years and 30 in leap years. Recommended Conversion Tools
For precise, day-to-day accuracy, use dedicated online converters:
: A widely used online Iranian date converter for switching between Solar Hijri, Gregorian, and Lunar Hijri calendars. Kodoom Tools
: Provides a simple interface for converting both forward and backward between Miladi and Shamsi. Tabdil App
: A mobile-friendly option for tracking cultural celebrations and important dates. Taghvim.com Key Calendar Differences New Year (Nowruz)
: The Shamsi calendar begins on the vernal equinox (March 19–21). Month Lengths
: The first six months have 31 days, while the next five have 30 days. Date Format : Iranians typically write dates as Day / Month / Year (e.g., ۲۸ مرداد ۱۴۰۴ for 28 Mordad 1404). Do you have a specific date you need converted, or would you like to see the leap year schedule for the current decade?
تبدیل تاریخ Iranian Date Converter 2026 - Taghvim.com
The Solar Hijri (Shamsi) calendar is a solar system used in Iran and Afghanistan that differs from the Gregorian (Miladi) calendar by approximately 621 to 622 years. Manual conversion requires adjusting for the 621-year gap, while online tools like Time.ir or Google search provide precise, exact-date conversions.
Converting a Solar Hijri (Shamsi) date to a Gregorian (Miladi) date involves transitioning between two solar-based systems that use different starting points (epochs) and month structures. Understanding the Two Systems
Solar Hijri (Shamsi): Currently the official civil calendar in Iran. It begins each year on the vernal equinox (Nowruz), typically around March 21. It counts years from the Prophet Muhammad's migration (Hijrah) in 622 CE.
Gregorian (Miladi): The internationally used civil calendar. It also follows the solar cycle but starts its year on January 1 and counts from the birth of Jesus Christ (Anno Domini). How to Convert Shamsi to Miladi
Because both calendars follow the sun's orbit, their year lengths are identical (365 or 366 days), making conversion more consistent than lunar systems.
Determine the Year Difference: Generally, adding 621 or 622 years to a Shamsi year provides the Miladi equivalent.
Add 621 years: If the Shamsi date falls between January 1 and the start of the Persian New Year (around March 20/21).
Add 622 years: If the Shamsi date falls after the Persian New Year (after March 21) through December 31. Specific Example: To convert the Shamsi year 1403: Dates before Nowruz (Spring): Dates after Nowruz (Spring): Month Correlation
The first six months of the Shamsi calendar have 31 days, and the next five have 30 days. Farvardin 1 (Nowruz): Typically corresponds to March 21. Tir 1: Typically corresponds to June 21 (Summer Solstice).
Mehr 1: Typically corresponds to September 23 (Autumn Equinox).
Dey 1: Typically corresponds to December 22 (Winter Solstice). Tools for Precise Conversion
For exact day-to-day accuracy, especially during leap years, it is recommended to use an Iranian Date Converter or dedicated mobile apps like the Date Converter.
This report examines the Solar Hijri calendar (Tarikh-e Hijri Shamsi), the official timekeeping system of Iran and Afghanistan, and its conversion to the Gregorian calendar (Tarikh-e Miladi). Overview of the Solar Hijri Calendar
The Solar Hijri calendar is a solar-based system that is widely considered one of the most accurate in the world due to its reliance on astronomical observations rather than fixed rules.
Starting Point (Epoch): Like the Lunar Hijri calendar, it starts from the year of the Prophet Muhammad's migration (Hijrah) in 622 CE.
New Year (Nowruz): The year begins at the exact moment of the Vernal Equinox (the start of spring in the Northern Hemisphere), typically on March 21.
Accuracy: It has an error of only one day in about 110,000 years, making it more precise than the Gregorian calendar, which drifts by one day every 3,226 to 3,333 years. Calendar Structure
The year is divided into 12 months, with lengths determined by the Earth's orbit: Month Order Persian Name Month Length Gregorian Equivalent Farvardin to Shahrivar 31 days each March – September Mehr to Bahman 30 days each September – February 29 days (30 in leap years) February – March
Leap Year Rule: Leap years occur every 4 or 5 years. This is typically managed through a 33-year cycle (8 leap years) or, more rarely, a 29-year cycle. Quick Conversion Guide Tarikh shamsi b miladi refers to the conversion
Because the Solar Hijri year begins in March, a single Shamsi year spans parts of two Miladi years. Year Conversion Formula:
For dates before the start of the next Miladi year (Jan 1): Miladi Year = Shamsi Year + 621
For dates after the start of the next Miladi year: Miladi Year = Shamsi Year + 622
Current Comparison (Example): As of April 2026, the current year is 1405 SH. Practical Tools for Conversion
For precise day-to-day conversion, several digital tools and methods are available:
For a quick, one-off conversion, the most reliable tools are:
Taghvim.com: A popular site that provides a clear interface for converting both ways between Persian and Gregorian calendars.
Kodoom.com: Offers a simple tool specifically for converting Miladi to Shamsi and vice versa.
Afghan Date Converter: Useful if you specifically need the Afghan version of the Shamsi calendar. 2. Microsoft Excel Methods (Best for data lists)
If you have a list of dates in a spreadsheet, you can use these approaches: Cell Formatting: Select the cell where you want the result. Right-click > Format Cells. Under the Number tab, select Date.
Change the Locale to "Persian (Iran)" to input Shamsi dates, or set it to "English" to view the converted Gregorian result.
Excel Formula (Office 365/2021): You can use a LET function to parse the date string and calculate the difference. For example:=LET(y,VALUE(LEFT(A1,4)),m,VALUE(MID(A1,6,2)),d,VALUE(RIGHT(A1,2))...) 3. Programming & Developer Tools (Best for automation)
Python: Use the shamsi-datetime package. You can install it via pip (pip install shamsi-datetime) and use the ShamsiDateTime class to convert objects directly into NumPy-compatible Gregorian dates.
.NET (C# / VB): Utilize the built-in PersianCalendar class provided by Microsoft, which allows for native date conversion within software applications. Quick Reference: Solar Hijri Months
When reading Shamsi dates, remember they are typically written as Day/Month/Year. Persian Month Name Approximate Gregorian Start March 21 (Spring Equinox) Ordibehesht September 23 October 23 November 22 December 22 January 21 February 20 shamsi-datetime - PyPI
Tarikh Shamsi vs Miladi: Understanding the Differences and Conversions
The solar calendar, also known as the Tarikh Shamsi or Persian calendar, and the Gregorian calendar, commonly referred to as the Miladi calendar, are two widely used calendar systems across the world. While the Miladi calendar is the most widely used internationally, the Tarikh Shamsi has significant cultural and historical importance in countries like Iran, Afghanistan, and Tajikistan. This article aims to explore the origins, differences, and conversion methods between these two calendar systems.
Origins of Tarikh Shamsi (Persian Calendar)
The Tarikh Shamsi, or Persian calendar, has its roots in ancient Persia (modern-day Iran). It is a solar calendar that was introduced in 1079 CE by the Seljuk Sultan Jalaluddin Malikshah I. This calendar is based on the solar year, with the beginning of the new year (Nowruz) marking the spring equinox. The Tarikh Shamsi consists of 12 months, with the months being: Farvardin, Ordibehesht, Khordad, Tir, Mordad, Shahrivar, Mehr, Aban, Azar, Dey, Bahman, and Esfand.
Origins of Miladi (Gregorian Calendar)
The Miladi calendar, also known as the Gregorian calendar, was introduced by Pope Gregory XIII in 1582 CE. It is a solar calendar that is based on a 365-day year, with an extra day added every four years (leap year). The Miladi calendar is the most widely used calendar internationally and is used as the global standard for business, travel, and communication.
Key Differences between Tarikh Shamsi and Miladi Calendars
The main differences between the Tarikh Shamsi and Miladi calendars are:
Converting between Tarikh Shamsi and Miladi Calendars
Converting between the two calendars can be done using the following methods:
Miladi Year = Tarikh Shamsi Year + 621 Miladi Month = Tarikh Shamsi Month - 3 (or add 9 if the Tarikh Shamsi month is less than 7)
For example, to convert the Tarikh Shamsi date 1399-01-01 (March 20, 2020) to a Miladi date:
Miladi Year = 1399 + 621 = 2020 Miladi Month = 1 - 3 = March (or add 9: 1 + 9 = 10, which corresponds to October, but this is incorrect)
The correct conversion is: 1399-01-01 (Tarikh Shamsi) = March 20, 2020 (Miladi)
Conclusion
The Tarikh Shamsi and Miladi calendars have distinct differences in their origins, structures, and conversion methods. While the Miladi calendar is widely used internationally, the Tarikh Shamsi calendar holds significant cultural and historical importance in certain regions. Understanding the differences and conversion methods between these two calendars can facilitate communication, trade, and cultural exchange between communities that use different calendar systems.
Table of Month Names
| Tarikh Shamsi Month | Miladi Equivalent | Days | | --- | --- | --- | | Farvardin | March-April | 31 | | Ordibehesht | April-May | 31 | | Khordad | May-June | 31 | | Tir | June-July | 31 | | Mordad | July-August | 31 | | Shahrivar | August-September | 31 | | Mehr | September-October | 30 | | Aban | October-November | 30 | | Azar | November-December | 30 | | Dey | December-January | 30 | | Bahman | January-February | 30 | | Esfand | February-March | 29/30 |
This table provides a quick reference to the Tarikh Shamsi months and their corresponding Miladi equivalents.
For tech-savvy readers, here is a Python function using the jdatetime library (precise conversion):
import jdatetime
from datetime import datetime
def shamsi_to_miladi(year, month, day):
"""Convert Solar Hijri to Gregorian"""
shamsi_date = jdatetime.date(year, month, day)
gregorian_date = shamsi_date.togregorian()
return gregorian_date
Tarikh Shamsi b Miladi: The Complete Guide to Converting Persian and Gregorian Dates
Tarikh Shamsi b Miladi (تاریخ شمسی به میلادی) – or the conversion from the Solar Hijri calendar to the Gregorian (Miladi) calendar – is an essential skill for millions of people across Iran, Afghanistan, Tajikistan, and the global Persian-speaking diaspora. Whether you are filling out international visa applications, booking flight tickets, managing business deadlines, or studying historical events, knowing how to accurately convert dates between these two systems is crucial. Online Tools and Tables: For more accurate and
In this comprehensive guide, we will explore the history of both calendars, the mathematical formulas behind the conversion, practical methods (including tables and software), common pitfalls, and a step-by-step guide to ensure you never miscalculate a date again.
Conclusion
While Tarikh Miladi dominates the global stage, Tarikh Shamsi remains a vital cultural pillar for millions. The Solar Hijri calendar is scientifically lauded for its precision regarding the solar cycle and the equinox. Whether you are planning a trip to Tehran, studying history, or managing international business, understanding the conversion between these two systems is indispensable.
Tarikh Shamsi B Miladi: Understanding the Solar Calendar and Its Significance
The solar calendar, also known as the Shamsi calendar, has been an integral part of many cultures and civilizations for centuries. In this article, we will explore the concept of Tarikh Shamsi B Miladi, its history, significance, and conversion methods.
What is Tarikh Shamsi B Miladi?
Tarikh Shamsi B Miladi, also known as the Solar Hijri calendar, is a solar calendar used to calculate the dates of important events and holidays in many countries, including Iran, Afghanistan, and Tajikistan. The calendar is based on the solar year, which is the time it takes the Earth to orbit the Sun.
The Tarikh Shamsi B Miladi calendar has 12 months, each consisting of 30, 31, or 29 days, depending on the month. The calendar begins on the spring equinox, which falls on March 20 or 21 in the Gregorian calendar. The first month of the Shamsi calendar is Farvardin, which corresponds to March 20-April 18 in the Gregorian calendar.
History of Tarikh Shamsi B Miladi
The Tarikh Shamsi B Miladi calendar has its roots in ancient Persia (modern-day Iran). The calendar was introduced during the reign of Cyrus the Great in the 6th century BCE. However, it wasn't until the 11th century CE that the calendar was reformed and standardized by the Seljuk Empire.
The Shamsi calendar was widely used in the Islamic world, particularly during the Islamic Golden Age. With the spread of Islam, the calendar became an essential part of Muslim culture and tradition.
Significance of Tarikh Shamsi B Miladi
The Tarikh Shamsi B Miladi calendar holds significant cultural, historical, and astronomical importance. Here are a few reasons why:
- Cultural Significance: The Shamsi calendar is an integral part of the cultural heritage of many countries, including Iran, Afghanistan, and Tajikistan. It is used to plan important events, such as Nowruz (the Persian New Year), weddings, and holidays.
- Astronomical Significance: The Shamsi calendar is based on the solar year, which makes it a highly accurate calendar. The calendar takes into account the Earth's orbit around the Sun, making it a reliable method for tracking time.
- Historical Significance: The Tarikh Shamsi B Miladi calendar has been used to record historical events, such as the rise and fall of empires, battles, and important cultural achievements.
Conversion Methods
Converting dates from the Tarikh Shamsi B Miladi calendar to the Gregorian calendar (Miladi) can be a bit tricky. However, there are several methods and tools available:
- Online Conversion Tools: There are many online tools and websites that provide Shamsi to Miladi date conversion. These tools are easy to use and provide accurate results.
- Manual Conversion: For those who prefer manual conversion, there are several formulas and tables available. However, this method requires a good understanding of the Shamsi calendar and its rules.
Tarikh Shamsi B Miladi Calendar vs. Gregorian Calendar
The Tarikh Shamsi B Miladi calendar and the Gregorian calendar (Miladi) have some key differences:
- Start Date: The Shamsi calendar begins on the spring equinox (March 20/21), while the Gregorian calendar begins on January 1.
- Month Length: The Shamsi calendar has 12 months, with varying lengths (29, 30, or 31 days). The Gregorian calendar has 12 months, with fixed lengths (28, 29, 30, or 31 days).
- Leap Year: The Shamsi calendar has a leap year every 4 years, similar to the Gregorian calendar. However, the rules for determining leap years differ between the two calendars.
Conclusion
The Tarikh Shamsi B Miladi calendar is an ancient and culturally significant calendar that continues to play an important role in many countries. Understanding the Shamsi calendar and its conversion methods can be useful for those interested in history, culture, and astronomy. As we continue to navigate the complexities of timekeeping, the Tarikh Shamsi B Miladi calendar remains an essential part of our shared cultural heritage.
Key Dates in Tarikh Shamsi B Miladi Calendar
Here are some key dates in the Tarikh Shamsi B Miladi calendar:
- Nowruz (Persian New Year): Farvardin 1 (March 20/21)
- Spring Equinox: Farvardin 1 (March 20/21)
- Summer Solstice: Khordad 31 (June 20/21)
- Autumn Equinox: Mehr 1 (September 22/23)
- Winter Solstice: Dey 1 (December 21/22)
Tarikh Shamsi B Miladi Calendar Months
Here are the 12 months of the Tarikh Shamsi B Miladi calendar:
- Farvardin (March 20-April 18)
- Ordibehesht (April 19-May 20)
- Khordad (May 21-June 20)
- Tir (June 21-July 22)
- Mordad (July 23-August 22)
- Shahrivar (August 23-September 21)
- Mehr (September 22-October 21)
- Aban (October 22-November 20)
- Azar (November 21-December 20)
- Dey (December 21-January 19)
- Bahman (January 20-February 18)
- Esfand (February 19-March 19)
By understanding the Tarikh Shamsi B Miladi calendar, we can gain a deeper appreciation for the cultural and historical significance of this ancient calendar. Whether you're interested in history, culture, or astronomy, the Shamsi calendar is an fascinating topic that continues to captivate people around the world.
The phrase tarikh shamsi b miladi refers to the conversion of dates from the Persian Solar Hijri (Shamsi) calendar to the Western Gregorian (Miladi) calendar. Understanding how these two systems interact is essential for anyone dealing with Iranian or Afghan history, business, or culture. The Two Calendar Systems
Solar Hijri (Shamsi): This is the official calendar of Iran and Afghanistan. It is a solar calendar based on the Earth's orbit around the sun. The year begins at the exact moment of the vernal equinox (Nowruz), typically occurring between March 19 and March 21.
Gregorian (Miladi): Used internationally for civil purposes, this calendar counts years from the assumed birth of Jesus Christ. It is also solar-based but follows fixed rules for month lengths and leap years, unlike the Shamsi calendar which relies on astronomical observations. How to Convert: A Simple Formula
To convert a Solar Hijri year to a Gregorian year, you generally add 621 or 622 years, depending on the month.
Between Nowruz (March 21) and December 31: Add 621 years to the Shamsi year.
Between January 1 and Nowruz (March 20): Add 622 years to the Shamsi year.
Example: To find the Gregorian equivalent for the year 1404 SH: If the date is after Nowruz (Spring), If the date is before Nowruz (Winter), Monthly Differences
The Solar Hijri year consists of 12 months, with the first six months always having 31 days and the next five having 30 days. The final month, Esfand, has 29 days in a common year and 30 in a leap year. This rigid structure differs from the Gregorian system, where months like February, April, and June vary more widely in length. Accuracy and Leap Years
The Solar Hijri calendar is considered one of the world’s most accurate because its start date is determined by astronomical measurement of the sun entering the Northern Hemisphere. While the Gregorian calendar uses a fixed rule (adding a leap day every four years, except for most century years), the Shamsi system uses a complex 33-year cycle to determine leap years, ensuring it stays perfectly aligned with the seasons.
While the world runs on the Gregorian (Miladi) calendar, Iran and Afghanistan use the Solar Hijri (Shamsi) system—widely considered the most accurate calendar in human history. 1. The World’s Most Precise Timekeeper
Unlike the Gregorian calendar, which uses fixed mathematical rules to approximate the year, the Solar Hijri calendar is strictly observational.
The Error Rate: The Gregorian calendar drifts by one day every 3,226 years. In contrast, the Solar Hijri calendar only drifts by one day every 141,000 years.
A Natural Anchor: Its New Year, Nowruz, is pinned exactly to the Vernal Equinox. The year begins at the precise second the sun crosses the celestial equator, as verified by astronomical observatories. 2. The Genius Behind the Math
This incredible accuracy is thanks to a 1079 CE reform led by the famous Persian polymath Omar Khayyam
. Khayyam’s "Jalali" calendar was more precise than the Julian calendar used in Europe at the time by several centuries. 3. Solar Hijri vs. Gregorian: Key Differences The Persian Solar Hijri Calendar - Time and Date
📅 What is Tarikh Miladi?
Miladi = Gregorian calendar, introduced by Pope Gregory XIII in 1582, now the global standard.
- Year length: 365 or 366 days
- Months: Irregular lengths (Jan 31, Feb 28/29, etc.)
- Epoch: Birth of Jesus Christ (year 1, though later calculations were off by a few years).