Even though our USA and Canada neighbors to the north will start observing Daylight Saving Time on Sunday, March 8 at 2:00 am, Mexico, except some exceptions including Mexico-USA border municipalities, will begin DST about a month later on April 5 and ending a week earlier on October 25, 2020.
Clocks in areas that follow DST in the USA & Canada (including some areas in Mexico) will be returned to Standard Time on November 1, 2020.
The state of Sonora has not observed DST since 1998 because of the non-observance of DST by its neighbor Arizona and its important economic ties with that US state.
There are also some remote villages that do not change their clocks.
The state of Quintana Roo as of February 1, 2015 has decided to not observe DST. At the same time, the timezone changed from CST to EST.
The Marías Islands and the Revillagigedo Archipelago do not observe DST. The westernmost island of the Revillagigedo Archipelago, Clarion Island, uses UTC-8 (PST) all the time; thus, during DST, Mexico has 4 different time zones.
In Mexico, Daylight Saving Time is known as the "horario de verano" (summer schedule). It has been observed since 1996 throughout most of the country.
In 2021, DST will begin in the US and Canada on Sunday, March 14 and will end on Sunday, November 7. In the parts of Mexico that observe DST including Vallarta-Nayarit, it will begin on April 4 and end on October 31, 2021.
The month in the spring before Daylight Saving Time begins in Mexico, and one week in the fall after Daylight Saving Time ends in Mexico, makes Mexico one hour out of sync with the corresponding US and Canadian time zones. Keep these time differences in mind when making your Mexico travel plans to visit Puerto Vallarta and Riviera Nayarit.
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If you would like to donate directly to the non-profits in Puerto Vallarta and Riviera Nayarit, here are some suggestions you may want to consider to help our local communities in this time of greatest need.