For Karwa Chauth 2025, women in Mumbai can break their fast after sighting the moon at 8:55 PM, according to Drik Panchang. The puja muhurat is from 5:57 PM to 7:11 PM, and the fasting time lasts from 6:19 AM to 8:13 PM. Falling today, October 10, devotees will offer prayers to the moon before ending their day-long fast.