Refraction is not considered in Geometric sunrise, which is different from Observational sunrise. Sunrise and sunset moments are considered while calculating geometric values of sunrise and sunset. The total time between sunrise and sunset at a given place when divided by eight gives the individual time duration for the eight segments. Consult daily Choghadiya and daily Panchang to find daily Rahu Kaal timings.Įach day, Rahu Kaal lasts for one and a half hour it is among the eight segments of the day that fall between sunrise and sunset.