The eight Choghadiya
Amrit, Shubh, Labh and Char are favourable; Rog, Kaal and Udveg are avoided for new beginnings. Udveg can be used for routine work. The same names repeat at night in a different order.
Why your city matters
Each Choghadiya is one-eighth of the daytime from local sunrise to sunset, so its clock time changes daily and by city. A generic all-India Choghadiya is wrong once your sunrise differs, and very wrong abroad. CosmosPandit builds it from the real sunrise at your coordinates.
Day vs night
Daytime Choghadiya run sunrise to sunset; night Choghadiya run sunset to next sunrise. Use the favourable daytime slot nearest your task.