Philadelphia, Pennsylvania, United States keeps America/New_York time. Every Vedic daily timing here, the Panchang, Rahu Kaal, Choghadiya and Muhurat, is built from Philadelphia's own sunrise and sunset, not a single all-India (IST) table, so it is specific to Philadelphia and shifts a little each day. Philadelphia runs 9 hours 30 minutes behind India, so a timing copied from an Indian panchang is wrong here. The live panel on each page is recalculated daily for Philadelphia.
The live panel shows today's tithi, nakshatra, yoga, karana and vaara for Philadelphia, updated daily.
The Panchang depends on local sunrise, and Philadelphia's sunrise differs, so its tithi/nakshatra timings are specific to Philadelphia.
Astronomically precise Rahu Kaal timings for 25 major Indian cities.