Add Sliven (Bulgaria) to your list and use my-locations table to visually convert it's time to another timezone or city time.
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Current time zone for Sliven (Bulgaria) is EET, whose offset is GMT+2 from Greenwich Mean Time (GMT).

The IANA timezone identifier for Sliven, Bulgaria is "Europe/Sofia"

It currently does not observe Daylight Savings Time.

DST ended on Sunday, October 27 2024 at 4:00 am local time, when time in Sliven moved back 1 hour to 3:00 am.
DST starts on Sunday, March 30 2025 at 3:00 am local time, when time in Sliven moves forward 1 hour to 4:00 am.