In version 2022a of the file "europe", we read for Simferopol: # The _Economist_ (1994-05-28, p 45) reports that central Crimea switched # from Kiev to Moscow time sometime after the January 1994 elections. # Shanks (1999) says "date of change uncertain", but implies that it happened # sometime between the 1994 DST switches. Shanks & Pottenger simply say # 1994-09-25 03:00, but that can't be right. For now, guess it # changed in May. 2:00 C-Eur EE%sT 1994 May # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev. 3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s 3:00 1:00 MSD 1996 Oct 27 3:00s # IATA SSIM (1997-09) says Crimea switched to EET/EEST. # Assume it happened in March by not changing the clocks. 3:00 Russia MSK/MSD 1997 3:00 - MSK 1997 Mar lastSun 1:00u • The quoted text is inconsistent: The comment says that Simferopol uses Moscow time since 1994 May, but the Zone line "3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s" contradicts it (Moscow had other switching times between summer and winter times). Which is correct? • It is not clear what "IATA SSIM (1994/1997)" actually says. They probably do not specify the switching times expressed with the Zone line "3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s" or do they? • The Zone line "3:00 Russia MSK/MSD 1997" is redundant. Michael Deckers.