Anomalies
Since political, in addition to purely geographical, criteria are used in the drawing of time zones, it follows that actual time zones do not precisely adhere to meridian lines. The EET (UTC+2) time zone, were it drawn by purely geographical terms, would consist of exactly the area between meridians 22°30' E and 37°30' E. As a result, there are European locales that despite lying in an area with a "physical" UTC+2 time, actually use another time zone; contrariwise, there are European areas that have gone for UTC+2, even though their "physical" time zone is different from that. Following is a list of such "incongruencies":
Read more about this topic: Eastern European Time