Add Cidade do Maio (Cape Verde) 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 Cidade do Maio (Cape Verde) is Atlantic/Cape_Verde, whose offset is GMT-1 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Cidade do Maio, Cape Verde is "Atlantic/Cape_Verde"

It currently does not observe Daylight Savings Time.