Add Buka (Papua New Guinea) 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 Buka (Papua New Guinea) is Pacific/Bougainville, whose offset is GMT+11 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Buka, Papua New Guinea is "Pacific/Bougainville"

It currently does not observe Daylight Savings Time.