Add Byumba (Rwanda) 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 Byumba (Rwanda) is CAT, whose offset is GMT+2 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Byumba, Rwanda is "Africa/Kigali"

It currently does not observe Daylight Savings Time.