The timezone AST in Saint BarthelemyTimezones are always computed by their difference to UTC, the "Universal Time Coordinated". In Saint Barthelemy exists only a single tonezone at UTC-4. E.g. Los Angeles is currently at UTC-7 in Pacific Time, so the time difference between LA and Saint Barthelemy is 3 hours.
Saint Barthelemy has no time difference between summer and winter. A daylight saving time doesn't exist.
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Only 1 nationwide time zone
|Standard time:||Atlantic Standard Time (AST)|
|Daylight saving time:||none|
The Atlantic Standard Time also applies in Anguilla, , Aruba, Barbados, in parts of Canada, in Curacao, Dominica, Grenada, Guadeloupe, Antigua and Barbuda, Bonaire, Saint Martin, St. Martin, Martinique, Montserrat, Trinidad and Tobago, Puerto Rico, Dominican Republic, Saint Kitts and Nevis, Saint Lucia, Virgin Islands, Saint Vincent and the Grenadines, in parts of Greenland, on the British Virgin Islands and in the Bermudas.
No daylight saving time in Saint BarthelemyDue to the sun's orbit around the equator, the days are longer in summer (June to September in the northern hemisphere). Countries that switch to daylight saving time in the summer months align the daylight phase with the human rhythm. Unused bright morning hours are thus shifted into the evening (more information on daylight saving time here).
Due to the relative proximity to the equator, the impact in Saint Barthelemy is not particularly large. Gustavia is only 2,000 km from the equator. A day in midsummer would then not last from 05:36 to 18:50, but from 06:36 to 19:50. The effect would be quite noticeable in the evening, but the sun rising later in the morning falls at a time when many people are already awake. Thus, daylight saving time was never introduced in Saint Barthelemy.