Best overlap: 3:00 PM to 6:00 PM in Jakarta is 8:00 AM to 11:00 AM in Manchester.
Your window to reach both cities is 3:00 PM to 6:00 PM in Jakarta, which converts to 8:00 AM to 11:00 AM in Manchester. The overlap sits at about 3 hours; aim for the heart of it so the call isn't too early for one team or too late for the other. The difference isn't constant year-round: Manchester adjusts for daylight saving while Jakarta holds steady.
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -