Mahabalipuram, Tamil Nadu, India keeps Asia/Kolkata time. Every Vedic daily timing here, the Panchang, Rahu Kaal, Choghadiya and Muhurat, is built from Mahabalipuram's own sunrise and sunset, not a single all-India (IST) table, so it is specific to Mahabalipuram and shifts a little each day. Even within India, Mahabalipuram's sunrise is not identical to Delhi's, so the daily windows shift accordingly. The live panel on each page is recalculated daily for Mahabalipuram.
The live panel shows today's tithi, nakshatra, yoga, karana and vaara for Mahabalipuram, updated daily.
The Panchang depends on local sunrise, and Mahabalipuram's sunrise differs, so its tithi/nakshatra timings are specific to Mahabalipuram.
Astronomically precise Rahu Kaal timings for 25 major Indian cities.