| Light Blue | Western European Time / Greenwich Mean Time (UTC) |
| Blue | Western European Time / Greenwich Mean Time (UTC) |
| Western European Summer Time / British Summer Time / Irish Standard Time (UTC+1) | |
| Red | Central European Time (UTC+1) |
| Central European Summer Time (UTC+2) | |
| Yellow | Eastern European Time / Kaliningrad Time (UTC+2) |
| Ochre | Eastern European Time (UTC+2) |
| Eastern European Summer Time (UTC+3) | |
| Green | Moscow Time / Turkey Time (UTC+3) |
| Turquoise | Armenia Time / Azerbaijan Time / Georgia Time / Samara Time (UTC+4) |
▉▉▉ Dark colours: Summer time observed
In Bulgaria, the standard time is Eastern European Time (Bulgarian: Източноевропейско време; EET; UTC+02:00).[1] Daylight saving time, which moves one hour ahead to UTC+03:00 is observed from the last Sunday in March to the last Sunday in October,[2] inline with most EU member states.[3]
- ^ Time in Bulgaria. TimeAndDate.com. Retrieved 5 May 2021.
- ^ Bulgaria at The World Factbook. Central Intelligence Agency (CIA). Retrieved 5 May 2021.
- ^ Bulgaria Turns Clocks to Daylight Saving Time March 28. Sofia News Agency – Novinite.com. Retrieved 5 July 2021.
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