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National official calendar

Indian National Calendar Converter

Convert Gregorian dates into the Indian National Calendar, also known as the Saka calendar, or convert Saka dates back into Gregorian dates.

Enter a Gregorian date to return the matching Indian National Calendar date.

Live output

Result

Ready to convert

Choose a direction, enter a Gregorian or Indian National Calendar date, and the result appears here without leaving the page.

Guide

Convert Indian National Calendar and Gregorian dates

This Indian National Calendar Converter changes Gregorian dates into Indian National Calendar dates and converts Saka calendar input back into Gregorian dates. It is intended for official civil calendar references where the Saka year and Indian National month names are needed.

The page uses ICU's indian calendar implementation. That means the converter reads and validates the Saka calendar fields through a stable calendar engine rather than relying on text matching or a hand-maintained month table.

Indian National Calendar input uses YYYY-MM-DD with numeric months. The result displays the month label, such as Chaitra or Asadha, so users can verify the numeric date against the named Saka month.

What it handles

Saka calendar conversion coverage

The converter supports both Gregorian to Indian National and Indian National to Gregorian conversion. Both directions use ICU calendar fields, which keeps leap-year and month-length behavior consistent across the page.

The page is scoped to the Indian National Calendar, also called the Saka calendar in this context. It does not convert regional Indian lunisolar calendars or religious panchangam dates.

Gregorian to Indian National

Enter a Gregorian date and return the matching Saka year, month, day, month name, and weekday.

Indian National to Gregorian

Enter an Indian National Calendar date in YYYY-MM-DD format and convert it back into Gregorian form.

Round-trip validation

Invalid Saka dates are rejected instead of being silently normalized into another month or day.

How to use

Use the Indian National conversion modes

Choose Gregorian to Indian National if your source date is Gregorian. Choose Indian National to Gregorian if your source date is already written as a Saka calendar date.

For reverse conversion, enter the Saka year, month number, and day as YYYY-MM-DD. The converter checks the date through ICU and returns an error if that exact Saka date is not valid.

1

Choose Gregorian to Indian National

Use this direction for a Gregorian date such as 2026-06-30. The result is 1948-04-09 in the Indian National Calendar.

2

Choose Indian National to Gregorian

Use this direction for Saka input such as 1948-04-09. The result is the matching Gregorian date.

3

Use numeric month input

Enter month numbers in the form and use the result month label to confirm the named Indian National Calendar month.

Examples

Reference conversions from the local implementation

These examples are produced by the same ICU-backed conversion functions used by the form. They show how a Gregorian date maps to a Saka year and month number in this implementation.

Gregorian date to Indian National date

2026-06-30 -> 1948-04-09

The Gregorian date 2026-06-30 converts to Indian National Calendar 1948-04-09.

Indian National date to Gregorian date

1948-04-09 -> 2026-06-30

The Indian National Calendar input 1948-04-09 converts back to Gregorian 2026-06-30.

FAQ

Indian National Calendar conversion notes

The Indian National Calendar is easy to confuse with regional Indian calendars because many systems use different eras, month starts, or lunar rules. These answers keep the page scoped to the official Saka calendar conversion implemented here.

Is the Indian National Calendar the same as all Indian calendars?

No. This page handles the Indian National Calendar / Saka calendar through ICU. It does not convert regional Hindu lunisolar calendars.

What input format is accepted?

Use YYYY-MM-DD with the Saka year and numeric month. The converter displays the month label after conversion.

How are invalid Saka dates handled?

The converter validates reverse input through ICU and rejects dates that do not round trip to the same Saka year, month, and day.

Reference

Calendar implementation reference

This page uses the ICU indian calendar identifier through PHP Intl. ICU calendar documentation is the relevant implementation reference for the calendar fields and validation behavior used by the converter.