Panchang means “five limbs,” and a traditional Hindu almanac reads every day through five simultaneous measurements. The vara is the familiar weekday. The tithi is the lunar day — one-thirtieth of the moon’s cycle, defined by the angle between moon and sun growing another 12 degrees; because that angular motion varies in speed, a tithi can run shorter or longer than a clock day, sometimes two tithis touching one sunrise or one tithi spanning two. The nakshatra names which of 27 lunar mansions — star sectors — the moon occupies. Yoga and karana complete the five, derived from combined solar-lunar arithmetic and half-tithis respectively.
Last updated: July 22, 2026
Festivals attach to these lunar coordinates, not to solar dates — which is why they wander on the civil calendar. Diwali falls on the new-moon tithi of the month Kartika; Holi on the full moon of Phalguna; Krishna Janmashtami on the eighth tithi of a waning fortnight. Since twelve lunar months run about eleven days short of the solar year, the panchang periodically inserts a leap month, the Adhik Maas, keeping festivals loyal to their seasons much as the Hebrew calendar does.
Regional systems add honest complexity. North India largely reckons months from full moon to full moon (Purnimanta); the south and west from new moon to new moon (Amanta) — the same festival day carries different month names, and boundary cases can shift observances by a day between regions. Solar-calendar traditions of Tamil Nadu, Kerala, Bengal, and Punjab layer their own new years — Vaisakhi, Puthandu, Vishu, Pohela Boishakh — clustered around the sun’s April entry into Aries.
Timing within the day matters as much as the date: ceremonies are set for auspicious windows (muhurta) computed from the five limbs, and a festival whose key tithi prevails at moonrise, midnight, or midday — depending on the festival’s own rule — determines which civil date hosts it. This is the precise reason two published calendars can disagree by a day and both be internally correct.
Millions of households still begin the year by buying the new panchang, now sharing shelf space with apps computing the same five limbs to the second.
The world calendars panel at ellatime.com shows the Indian civil (Saka) date daily, and its festival list carries Diwali and Holi on published panchang-verified dates — with the honest regional-variation note the tradition itself would insist on.
The panchang’s astronomy is genuinely sophisticated: classical texts like the Surya Siddhanta computed planetary positions, eclipses, and the five limbs with methods that impressed later historians of science, and traditional panchang-makers (often hereditary families) published regional editions timed to their city’s coordinates — because a tithi’s start shifts with longitude, a Mumbai almanac genuinely differs from a Kolkata one by minutes that occasionally matter.
Modern India runs the two systems in parallel by design: the reformed Saka calendar serves civil administration alongside the Gregorian, while festivals, weddings, and temple schedules follow the lunisolar panchang — one country reading three calendars fluently, and expecting its calendars, printed or app-based, to do the same.
Related on Ellatime: How Leap Years Work in Other Calendars · How the Hebrew Calendar Adds a Whole Leap Month · What Islamic Year Is It? Understanding 1448 AH
Further reading: Encyclopaedia Britannica — Calendar
Editorial Note: This article was researched and written by the Ellatime editorial team. We fact-check our content and update it regularly. For questions or corrections, contact us.
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