Add Irkutsk (Russia) 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 Irkutsk (Russia) is Asia/Irkutsk, whose offset is GMT+8 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Irkutsk, Russia is "Asia/Irkutsk"

It currently does not observe Daylight Savings Time.