Add Bontang (Indonesia) to your list and use my-locations table to visually convert it's time to another timezone or city time.
Mouse over the colored hour-tiles and glance at the hours selected by the column.

Current time zone for Bontang (Indonesia) is WITA, whose offset is GMT+8 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Bontang, Indonesia is "Asia/Makassar"

It currently does not observe Daylight Savings Time.