Add Phonhthieng (Laos) 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 Phonhthieng (Laos) is Asia/Vientiane, whose offset is GMT+7 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Phonhthieng, Laos is "Asia/Vientiane"

It currently does not observe Daylight Savings Time.