Abhijit muhurat is the short midday window that is considered the most auspicious part of the day (sunrise to sunset) — roughly 24 minutes before to 24 minutes after local midday, so about ~48 minutes in all. It is available every day except Wednesday, which is why there is a common saying: ‘if no other muhurat fits, use Abhijit.’ The exact time shifts a little by city and by day.