The panchang is the Hindu almanac for a single day: five measures of the Sun and the Moon, plus the good and difficult windows people check before they begin something. Pick your city above to see today's tithi, nakshatra, yoga, karana and vara, your sunrise and sunset, Rahu Kaal, Abhijit Muhurat, and the day and night Choghadiya.
Pancha means five and anga means limb, and each limb describes the day from a different angle. Four of them come from where the Sun and the Moon stand, so they change at their own pace rather than at midnight. The fifth is simply the day of the week.
Rahu Kaal is one of eight equal parts of the daylight hours, and which part it is depends on the weekday. If your sunrise is at 6 and your sunset at 6, each part lasts ninety minutes, but in winter it is shorter and in summer longer. By custom people avoid beginning something new in this window, such as a journey, a purchase or a ceremony. Work already under way simply carries on, and there is nothing to fear in it.
Abhijit Muhurat is the opposite: a window of roughly 48 minutes around local midday, the eighth of the fifteen muhurtas between sunrise and sunset. It is traditionally treated as a good time to begin something when no other muhurat has been fixed. Abhijit is traditionally not used on Wednesdays.
Choghadiya splits the day into eight equal periods from sunrise to sunset, and the night into eight more from sunset to the next sunrise. Each carries one of seven names, and the order changes with the weekday. Many families and traders in western India use it for everyday timing, because it is easy to read at a glance.
Because they are all counted from local sunrise and sunset. Delhi and Chennai see the Sun rise at different moments, so their Rahu Kaal, Abhijit Muhurat and Choghadiya differ too. Choose the city you are actually in.
Yes. They follow the Moon rather than the clock, so a tithi or nakshatra can end in the morning and the next one can run through the rest of the day. That is normal, and it is why a calendar sometimes skips a tithi or shows one across two days.
No. It is a custom about when to begin something new, not a warning that anything will go wrong. If you can start a little earlier or later, many people do. If you cannot, the rest of your day and your own good sense matter far more.
Abhijit is one window around midday. Choghadiya is a full timetable of the day and night with sixteen periods. Many people look at Choghadiya first for ordinary plans and treat Abhijit as a useful midday option, except on Wednesdays.