India keeps time through many traditional calendars — solar, lunar and luni-solar — varying by region and tradition. Every calendar below is computed right here in your browser from astronomical formulas; nothing is fetched from outside.
Region-wise month views with tithi, regional dates and era years
Computed festival dates for any year
The Nanakshahi calendar with Sangrands and Gurpurab dates
Bikram Sambat and the great festivals of Nepal
Dates are computed with a high-precision astronomy engine (VSOP87 solar theory, the full Meeus lunar series, Lahiri ayanamsa). The day's tithi is reckoned at local sunrise for Ottawa (UTC-4), and time-sensitive vrats (Pradosh, Shivaratri, Sankashti, Ekadashi) follow their traditional observance windows. Regional day numbers and era years remain close approximations — please verify against an official regional panchang before fixing a muhurta or ritual.