Which date should I use?

The SGPC-amended date is the more widely observed convention today. Some communities and Gurdwaras still follow the Mool Nanakshahi calendar — check with your own community if you're planning an observance.

Why is Vaisakhi not affected by this dispute?

Vaisakhi (the founding of the Khalsa) wasn't one of the dates the 2010 revision changed — it remains 1 Vaisakh, a fixed solar date, in both calendar versions.

All tools

Sikh Tools

Gurpurab Calculator

Guru Nanak Gurpurab and Vaisakhi — both the SGPC-amended and Mool Nanakshahi dates.

🔒 Runs entirely in your browser — nothing here is ever uploaded

Remove ads →

About the Gurpurab Calculator

Computes Guru Nanak Gurpurab and Vaisakhi dates — showing both the SGPC-amended and Mool Nanakshahi conventions for Gurpurab, a genuine, unresolved dispute in the Sikh community.

100% Free Runs in Your Browser No Sign-Up Required

How to use it

Enter a Gregorian year.
Read Guru Nanak Gurpurab under both conventions, and Vaisakhi (undisputed).

Formula

SGPC-amended (default since 2010): Kartik Purnima, the pre-2003 lunar Bikrami determination — computed as the next full moon after Diwali (Kartik Amavasya). Mool Nanakshahi: a fixed date, 1 Vaisakh in the original 2003 calendar. Vaisakhi: 1 Vaisakh in both versions, unaffected by the dispute.

Worked example

In 2026: Guru Nanak Gurpurab falls November 24 (SGPC-amended) or April 14 (Mool Nanakshahi) — both verified against independently-published sources.

Interpreting your result

This is a real, unresolved dispute, not a single-answer calendar question. The original 2003 Nanakshahi calendar fixed every Gurpurab to a solar date; a 2010 SGPC revision reverted several major Gurpurabs — most notably Guru Nanak's — back to their older lunar Bikrami determination. Both dates are shown rather than presenting one as the only answer.

Recommendations

• The SGPC-amended date is the more widely observed convention today, which is why it's shown first — but it isn't the only one in active use.

Frequently asked questions

The original 2003 Nanakshahi calendar (Mool Nanakshahi) fixed Guru Nanak's Gurpurab to a solar date. In 2010, the SGPC revised the calendar under pressure from groups favoring the traditional lunar Bikrami determination — reverting this and a few other major Gurpurabs to their older, movable dates. Groups that reject the 2010 revision still use the original fixed date.