Add Isla Umbú (Paraguay) 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 Isla Umbú (Paraguay) is America/Asuncion, whose offset is GMT-3 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Isla Umbú, Paraguay is "America/Asuncion"

It currently does not observe Daylight Savings Time.