I used TimeAndDate.com to doublecheck, and to correct for Daylight Saving Time status as of the day of the challenge.
Starting Oct. 13, ending Oct. 14:
- UTC+5:30 (Bangalore): 10:30 pm
- UTC+3 (Moscow): 8 pm
- UTC+2 (Brussels): 7 pm
- UTC+1 (London): 6 pm
- UTC: 5 pm
- UTC-3 (Buenos Aires): 2 pm
- UTC-4 (New York): 1 pm
- UTC-5 (Chicago): 12 noon
- UTC-6 (Denver): 11 am
- UTC-7 (Los Angeles): 10 am
- UTC-10 (Honolulu): 7 am
Starting Oct. 14, ending Oct. 15:
- UTC+13 (Auckland): 6 am
- UTC+11 (Sydney): 4 am
- UTC+9 (Tokyo): 2 am
- UTC+8 (Beijing): 1 am