Vancouver is 14 hours behind Jakarta
There is no standard 8-to-6 overlap. Someone joins early or late.
Set against a 14-hour difference, Jakarta and Vancouver run their workdays on completely separate schedules. Block a single recurring off-hours slot that both teams agree on, rather than negotiating a new awkward time every week. Note that Vancouver follows daylight saving while Jakarta stays put, so the times above drift by an hour seasonally.