Add Guelma (Algeria) 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 Guelma (Algeria) is CET, whose offset is GMT+1 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Guelma, Algeria is "Africa/Algiers"

It currently does not observe Daylight Savings Time.