Anchorage is 16 hours behind Jakarta
Best overlap: 8:00 AM to 10:00 AM in Jakarta is 4:00 PM to 6:00 PM in Anchorage.
The overlap falls at 8:00 AM to 10:00 AM in Jakarta, or 4:00 PM to 6:00 PM if you're in Anchorage. The overlap is tight at roughly 2 hours, so protect it: 8:00 AM in Jakarta / 4:00 PM in Anchorage is your safest recurring slot. The overlap spans the date line; in practical terms, Anchorage is on the previous day compared to Jakarta. Heads up: because Anchorage changes its clocks and Jakarta doesn't, the difference moves by an hour twice a year. Confirm the overlap around the DST switch.