Time Zone History

Mérida time zone history

Daylight saving time was used in 27 years since 1970, last in 2022; under the current rules the clocks no longer change. On standard time, clocks in Mérida run 2 minutes behind local mean solar time.

UTC−6

Standard time is UTC−6 (CST) all year under the current rules.

Covers: Campeche and Yucatán · tz database name America/Merida

Convert a time from Mérida

Summer time in 27 of 57 years since 1970

UTC−6: today’s standard timeUTC−5:58:28: 2 minutes ahead of today’s standard timeUTC−5: 1 hour ahead of today’s standard timeUTC−6: today’s standard timeUTC−5:58:28: 2 minutes ahead oftoday’s standard timeUTC−5: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

19101920193019401950196019701910192019301940195019601970
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
January 1, 1922Local mean time (UTC−5:58:28) replacedUTC−6CST
Since 1970
December 26, 1981Standard time forward 1 hourUTC−5EST
November 2, 1982Standard time back 1 hourUTC−6CST

Daylight saving periods

Since 1970: the periods shared by 3 of 12 zones, listed on the Mexico page.

Also on UTC−6

Belize, Guatemala, Honduras, El Salvador, Matamoros (Mexico), Mexico City (Mexico), Nicaragua, Monterrey (Mexico), Costa Rica and Bahía de Banderas (Mexico) (nearest first; 17 more on the list of offsets).

Clocks next door since 1970

  • Cancún (296 km): same time except 3,036 days in 1982, 1983, 1997, 1998 and 2015–2026; 1 hour ahead today.
  • Belize (413 km): same time except 5,955 days in 1973, 1974, 1981–1983 and 1996–2022.
  • Guatemala (711 km): same time except 6,062 days in 1973, 1974, 1981–1983, 1991 and 1996–2022.
  • Cuba (785 km): usually 1 hour ahead; different on 6,628 days in 1970–2026.
  • Honduras (805 km): same time except 6,035 days in 1981, 1982, 1987, 1988 and 1996–2022.