About

Sinhala Calendar publishes the Poya (full moon) calendar for Sri Lanka, the Sinhala & Tamil New Year date, every gazetted public holiday and festival observed nationally, and daily sun, moon and lunar-day (tithi) timings for Colombo.

What you will find here

• Poya calendar: every full-moon observance day in the year, with the Sinhala month name (Duruthu, Navam, Medin, Bak, Vesak, Poson, Esala, Nikini, Binara, Vap, Il, Unduvap), including the extra (“Adhi”) Poya a leap lunar year adds.
• Festivals & public holidays: the full gazetted calendar for the year — Poya days, the Sinhala & Tamil New Year, national days, and the Hindu, Christian and Muslim holidays Sri Lanka observes nationally.
• Sinhala & Tamil New Year (Aluth Avurudda / Puththandu): the date and the exact moment of the solar transition that marks it.
• Daily panchangam for Colombo: sunrise, sunset, moonrise, moonset, the current lunar day (tithi), and the day’s Rahu Kalam, Yamagandam, Gulika Kalam and Nalla Neram periods.

How this is put together

The sun, moon, tithi and day-period (Rahu Kalam and similar) timings are calculated, not copied from a printed almanac — the same Drik method (Swiss Ephemeris, sidereal zodiac) used across this publisher’s other calendar sites, computed for Colombo.

The Sinhala & Tamil New Year date and moment come from the same calculation: it is the instant the Sun crosses into Aries (Mesha/Vishu sankranti), which is exactly the moment Sri Lanka’s Sinhala and Tamil communities mark together as the New Year.

Festival and public-holiday dates are different. They are not computed here. Sri Lanka’s public holiday calendar has a single recognised authority — the Government Printing Department’s official annual calendar — so every year’s full list (Poya, New Year, national, Hindu, Christian and Muslim) is taken directly from that calendar (via its published reporting), not derived. Where a date can be independently checked — Poya days against the lunar calculation, and the Hindu festivals against the same calendar engine that governs Tamil Nadu’s festival dates — we do that cross-check, but the gazette is always the source, never the calculation.

One thing we deliberately do not compute: Islamic (Hijri) dates for Sri Lanka. The underlying calendar engine can produce a Hijri date, but it is sourced for India’s moon-sighting committee, which can differ by a day from Sri Lanka’s own. So Eid-ul-Fitr, Eid al-Adha and Milad-un-Nabi here are always the gazette’s own published date, never a calculated one.

The auspicious-time (nekath) details published separately each year for the New Year — the inauspicious transition period, and the right times for specific rituals — are not yet reproduced on this site.

Who we are

Sinhala Calendar is published by Dailyworks Commerce Infrastructure Pvt Ltd, Chennai, which also publishes Panjangam, Tamil Calendar and several other calendar sites. If you spot a mistake, please tell us. See the Contact page.