Do not rely on generic online calendars. Open the PDF to the specific date. For example, for (Nov 4, 2021), the PDF will give the exact Naraka Nivarana Deepam time—usually the earliest morning Abhyanga Snanam time, which varies year to year.

The traditional Tamil calendar runs from April (Chithirai) to March. The "Pambu Panchangam 2021-22" typically covers from April 14, 2021, to April 13, 2022 .