A public-holiday calendar records the days India has set aside as statutory time off. National holidays apply nationwide; where an official regional or provincial list is published, those dates are included separately and clearly labelled rather than folded into the national figures. This calendar is a reference, not a legal determination of anyone's leave entitlement. Dates move for two common reasons: many countries observe a fixed-date holiday on the nearest working day when it falls at a weekend, and some observances follow lunar or other non-Gregorian reckoning that shifts against the everyday calendar. Regional holidays are always shown as regional and never added to the national count. The licence terms and the government producer behind each list are credited on the sources page.
Reading the table
The table gives the date a holiday falls on, the observance date when a weekend shift or substitute day applies, and notes published with the source. A Regional · <region> badge marks a holiday that applies only in that region; it is never counted as nationwide. Some countries publish both the original date and the observed date, so both are shown instead of silently adjusting one. Employers, schools, and individual workplaces may follow different calendars or grant extra days, so treat this table as a guide rather than an entitlement. For a wider comparison of why observance moves between countries, see why holiday dates differ between countries. The official source is always the final authority.
Where these dates come from
The India desk follows the Reserve Bank of India's holiday matrix, the calendar the central bank uses for its Mumbai offices. The RBI terms of use permit republication with attribution. The matrix mixes nationwide holidays with a small number of state dates: Maharashtra Day (1 May) is marked here as regional because it applies in Maharashtra and not across the country. Other state-specific holidays are not included, because the RBI publishes a Mumbai reference calendar rather than an all-India state feed. India's festival dates follow lunar and religious calendars, so Diwali, Holi, Eid and the rest move against the Gregorian year and cannot be derived from a fixed rule. Some dates also carry a state or central government notification that can change at short notice. Corrections are taken from the RBI matrix and the desk is rebuilt from it. The matrix is published a year at a time, so later years are added as the RBI releases them rather than extrapolated.