Add Моратува (Шри-Ланка) 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 Моратува (Шри-Ланка) is +0530, whose offset is GMT+5:30 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Моратува, Шри-Ланка is "Asia/Colombo"

It currently does not observe Daylight Savings Time.