Jakarta is 6 hours ahead of Copenhagen
Best overlap: 8:00 AM to 12:00 PM in Copenhagen is 2:00 PM to 6:00 PM in Jakarta.
The hours that work for both Copenhagen and Jakarta are 8:00 AM to 12:00 PM (Copenhagen) and 2:00 PM to 6:00 PM (Jakarta). With about 4 hours of overlap, there's comfortable room for a daily stand-up — 8:00 AM in Copenhagen / 2:00 PM in Jakarta works well. Note the seasonal wrinkle: when Copenhagen is on daylight saving and Jakarta isn't, the gap between them grows or shrinks by an hour.