Add CDT (Central Daylight Time (North America)) 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 CDT (Central Daylight Time (North America)) is CDT, whose offset is GMT-5 from Greenwich Mean Time (GMT).

The IANA timezone identifier for CDT, Central Daylight Time (North America) is "CDT"