Add Grand River South-East (Mauritius) 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 Grand River South-East (Mauritius) is Indian/Mauritius, whose offset is GMT+4 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Grand River South-East, Mauritius is "Indian/Mauritius"

It currently does not observe Daylight Savings Time.