Chandra Darshan is the first day of moon sighting after no moon day. People observe a day long fast and break it after sighting new moon on Chandra Darshan day. Predicting the first day of Chandra Darshan is always a challenging task for Panchang makers. The moon is visible only for a short span of time on the first day of Chandra Darshan and that is just after the sunset. In other words, the moon sets about one hour after sunset and can be sighted only after sunset due to being in the same horizon as that of the sun. Hence the moon can be sighted only after the sunset, when it is also going to be set.