Delhi Metro services begin at 4:30 am on Monday to help commuters travel for Chhath Puja’s Usha Arghya, the morning ritual. Multiple outlets report the schedule is brought forward by about two hours from the usual start time, with trains operating before regular revenue services begin.

Reports say trains depart simultaneously from all terminal stations across the DMRC network and run at 15-minute intervals during the early period. Once regular services start, the metro follows its normal daily timetable. One outlet also refers to Chhath Puja’s progression to the final day, mentioning devotees offering arghya to the rising Sun.

Overall, the core details—an early 4:30 am start, uniform departures from terminals, and 15-minute frequency—are consistent across sources, with minor differences in emphasis and festival-day framing rather than conflicting facts.