Add NST (Newfoundland Standard Time) 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 NST (Newfoundland Standard Time) is NST, whose offset is GMT-2:30 from Greenwich Mean Time (GMT).

The IANA timezone identifier for NST, Newfoundland Standard Time is "NST"