Bucharest is 5 hours behind Jakarta
Best overlap: 1:00 PM to 6:00 PM in Jakarta is 8:00 AM to 1:00 PM in Bucharest.
Shoot for 1:00 PM to 6:00 PM in Jakarta; your Bucharest colleagues will see that as 8:00 AM to 1:00 PM. Bucharest is 5 hours behind Jakarta, so the practical overlap is about 5 hours — generous enough for meetings, tight enough to be worth booking ahead. Note that Bucharest follows daylight saving while Jakarta stays put, so the times above drift by an hour seasonally.