City history
First documented as a princely citadel in 1459, Bucharest transitioned from local solar time to Eastern European Time in 1931 and follows European Union daylight saving rules.
Chapter one
Earliest documented name
"Citadel of Bucur / Joyful"
First recorded on September 20, 1459, in an Old Church Slavonic deed issued by Vlad III the Impaler, the name București derives from Bucur, a legendary shepherd or ruler whose name shares roots with the Romanian word for joyful.
Citadel of Bucur / Joyful Fortress
First referenced in a 1459 princely charter issued by Vlad III the Impaler, serving as a fortified residence for Wallachian rulers.
City of Bucur / Joyful City
Established as the permanent capital of Wallachia under Prince Gheorghe Ghica in 1659, later becoming the capital of united Romania in 1862.
Chapter two
Romania established Bucharest Mean Time (UTC+1:44:24) based on the meridian of Filaret Hill to synchronize train schedules across the national railway network.
Romania officially transitioned from Bucharest Mean Time to Eastern European Time (UTC+2), aligning national timekeeping with neighboring European states.
Romania introduced daylight saving time (UTC+3) during summer months from May to October, operating annually until its suspension in 1943.
Romania restored annual daylight saving time observation (UTC+3 in summer) to conserve national energy, initially running from May to September.
Romania aligned its clock changes with European Union standards, advancing to EEST on the last Sunday in March and reverting to EET on the last Sunday in October.
Chapter three
Prince Vlad III the Impaler issued an official document referencing the Citadel of București, marking the earliest confirmed historical record of the city.
The inauguration of North Station (Gara de Nord) transformed Bucharest into Romania's primary railway node, driving clock synchronization across transit lines.
A meridian transit hall equipped with a telescope was erected at Filaret Hill in Bucharest to determine precise astronomical time for national services.
Astronomer Nicolae Coculescu founded the Bucharest Astronomical Observatory, creating Romania's primary institution for celestial observations and precise time measurements.
The Bucharest Metro opened its first line between Semănătoarea and Timpuri Noi, introducing synchronized transit timing to the capital's rapid transit network.