Jakarta is 5 hours ahead of Warsaw

Best overlap: 8:00 AM to 1:00 PM in Warsaw is 1:00 PM to 6:00 PM in Jakarta.

Aim for 8:00 AM to 1:00 PM Warsaw time — that's 1:00 PM to 6:00 PM over in Jakarta. Around 5 hours of overlap is enough to work comfortably, as long as meetings don't drift to the end of one team's day. These times hold for most of the year, but Warsaw's daylight saving (which Jakarta doesn't use) shifts them by an hour twice annually.