Datetime Tools · India
Indian National Calendar converter.
Convert a Gregorian date to the civil Saka calendar used in Indian government communications, or enter a Saka date to get its Gregorian equivalent.
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Conversion result
Enter a date above to see its equivalent.
How the National Calendar is calculated
This page uses the civil Indian National Calendar, also called the Saka calendar. Chaitra 1 falls on 22 March in a common Gregorian year and 21 March in a Gregorian leap year. Chaitra has 30 days in a common year or 31 in a leap year; Vaisakha through Bhadra have 31 days, and Asvina through Phalguna have 30 days.
The implementation is a deterministic date-only calculation in your browser. It does not use a regional lunar Panchang, festival observance rules, sunrise times, tithis, or a remote API.
Indian National Calendar months
| No. | Month | Common year | Leap year |
|---|---|---|---|
| 1 | Chaitra | 30 days | 31 days |
| 2 | Vaisakha | 31 days | 31 days |
| 3 | Jyaistha | 31 days | 31 days |
| 4 | Asadha | 31 days | 31 days |
| 5 | Sravana | 31 days | 31 days |
| 6 | Bhadra | 31 days | 31 days |
| 7 | Asvina | 30 days | 30 days |
| 8 | Kartika | 30 days | 30 days |
| 9 | Agrahayana | 30 days | 30 days |
| 10 | Pausa | 30 days | 30 days |
| 11 | Magha | 30 days | 30 days |
| 12 | Phalguna | 30 days | 30 days |
Supported range and limitations
Gregorian dates from 1900-01-01 through 9999-12-31 are supported. Saka input is accepted only when the resulting Gregorian date stays inside that same range. The Saka year is a civil era number; this tool does not imply that the modern National Calendar was in official use before its 1957 introduction.
Regional names and transliterations can vary. The month names shown here use a common English transliteration of the Government of India and India Meteorological Department labels (for example, Jyaistha may also appear as Jaishtha or Jyaishtha). This tool is not a converter for Vikram Samvat, Bengali, Tamil, Malayalam, or other regional calendars.
Sources and provenance
Sources checked 29 September 2026. The boundary rule and civil-calendar scope were checked against the Embassy of India overview of the National Calendar and the India Meteorological Department's Rashtriya Panchanga explanation. Month spellings were checked against the Comptroller and Auditor General office-procedure manual.
Method note: This is a fixed-rule civil conversion. It cannot answer questions about local festival dates, lunar observances, or astronomical Panchang calculations.