Key takeaways
- Most European countries change clocks on different dates than the U.S.: the last Sunday in March (spring) and October (fall) versus the second Sunday in March and first Sunday in November.
- Arizona and Hawaii stay on standard time year-round while most U.S. states observe daylight saving time, and several countries within Europe, Asia and the Pacific do not observe it at all.
- Half-hour and 45-minute time offsets exist in India, Sri Lanka, Afghanistan, Iran, parts of Australia and Nepal; some Maldives resorts also set clocks one hour ahead of the official time.
- Calendar apps default to your current time zone when entering appointments while traveling, causing scheduling mistakes—manually override the time zone or use Outlook's multi-zone display to stay organized.
When traveling across time zones during spring and fall, a seemingly simple detail can derail an entire itinerary. A recent evening in London taught one travel journalist this lesson the hard way. After ordering wine at a bar in Bermondsey, she overheard bartenders discussing the clocks jumping forward the coming Sunday. She nearly choked on her Chablis upon realizing she had already changed her clocks back home in New York the previous week. The U.K. shifts clocks on the last Sunday in March, while the U.S. does so on the second Sunday—a one-week gap that cost her two hours of lost sleep in a single month.
Most of the World Doesn’t Change Clocks When You Do
Approximately 66% of the world’s countries do not observe daylight saving time at all, according to Pew Research Center data. Yet even among nations that do, schedules diverge sharply. Most European countries follow the U.K.’s pattern, advancing clocks one hour on the last Sunday in March and turning them back one hour on the last Sunday in October. Several non-European Union countries within Europe—including Armenia, Azerbaijan, Belarus, Georgia, Iceland, Russia and Turkey—maintain standard time year-round.
African and Middle Eastern Schedules
Africa stands apart as a continent where daylight saving time remains rare. Egypt became the sole African nation to reintroduce the practice in 2023, resuming the schedule after a seven-year hiatus. The country now advances clocks one hour on the last Friday in April and reverses the change one hour on the last Thursday in October. This schedule differs from both European and North American patterns, creating an additional layer of complexity for travelers departing from regions with different change dates.
North America’s Regional Exceptions
Within the United States, most states observe daylight saving time from the second Sunday in March to the first Sunday in November. Arizona and Hawaii are the notable exceptions, remaining on standard time year-round. According to The Points Guy, this creates real complications for Arizona residents traveling to neighboring states. Arizona operates on Pacific Daylight Time from mid-March to early November and Mountain Standard Time for the rest of the year. The publication’s newsletter managing editor emphasized the importance of double-checking flight times and reservations when traveling in or through Arizona, as missing a flight or a reservation remains an ever-present risk.
Canada generally follows the U.S. schedule but permits regional variation. Most of Saskatchewan, the Yukon, and portions of Quebec and British Columbia stay on standard time year-round. Travelers planning road trips across Canada should verify the time zone rules for each province or territory.
Australia’s State-by-State System
Australia’s daylight saving system operates on a state level, creating five distinct zones. The Australian Capital Territory, New South Wales, South Australia, Tasmania and Victoria observe daylight saving time from the first Sunday in October to the first Sunday in April. The Northern Territory, Queensland and Western Australia do not observe it. A traveler planning flights or coordinating activities across multiple Australian states faces the same complexity as someone traveling across North America or Europe.
Unusual Time Zone Offsets Add Another Layer of Complexity
Beyond varying daylight saving schedules, several countries operate on time offsets that deviate from the standard hourly increments. India, Sri Lanka, Afghanistan and Iran all use half-hour offsets from Coordinated Universal Time (UTC). Some Australian states follow the same 30-minute pattern. Nepal extends this further with a 45-minute offset, a quirk driven by its geographic location.
The Maldives presents a particularly intricate case. While the country maintains one official time zone—Maldives Time, five hours ahead of UTC—some private island resorts add an additional hour to extend evening daylight for guests. The St. Regis Maldives Vommuli Resort sets its clocks to what it calls “Island Time,” one hour ahead of the official standard. The resort mitigates potential missed connections by coordinating airport transfers through butler services, preventing guests from inadvertently arriving at the airport according to the wrong clock.
Newfoundland operates 90 minutes ahead of Eastern Time rather than the standard 60-minute offset used throughout Atlantic Canada. According to The Points Guy, this offset created a scheduling headache during a July trip. The director of travel content accepted an Outlook invitation for a 7:30 p.m. dinner meeting scheduled for the following week without thinking through the time difference. He later learned the dinner actually began at 6 p.m. back home, a detail he missed until a calendar reminder popped up 15 minutes before the event’s actual start time.
Digital Calendar Mistakes Compound Time Zone Confusion
Even when aware of time zone differences, travelers routinely make scheduling errors when entering appointments into digital calendars while away from home. According to The Points Guy, one senior writer arrived an hour late to her middle son’s birthday party after adding the event to her calendar while traveling in a different time zone. The calendar application automatically defaulted to her current location’s time zone, displaying an incorrect time for the party back home. She discovered the error only after arriving to find the children already eating cake.
The problem stems from how calendar applications handle time zones by default. To prevent this mistake, travelers should manually override the automatic time zone setting whenever entering events for their home location while abroad. Microsoft Outlook offers a useful feature: users can display up to three time zones simultaneously on their calendar view. To enable this capability, navigate to “Settings,” then “Calendar,” then “Time zones.” Check the box labeled “Show second time zone in Day and Week view” beneath the default time zone. An additional checkbox allows a third time zone to be displayed.
Cruises Introduce Daily Time Zone Changes
Cruises traversing multiple time zones—particularly transoceanic voyages—introduce daily or near-daily clock adjustments that can confuse even experienced travelers. A cruise crossing the Pacific Ocean crosses the international date line, which can result in losing an entire day. According to The Points Guy, one executive sailing from Seward, Alaska to Tokyo last year experienced this phenomenon firsthand, adjusting clocks between one and two hours each night.
Even shorter cruises require vigilance. A five-day Alaska round-trip cruise departing from Vancouver involved two time zone changes as the ship moved in and out of Alaska Daylight Time. Cabin stewards typically leave notes at turndown service to alert passengers about upcoming time changes, but relying solely on crew reminders invites mistakes.
One complication affects cruises in the Caribbean. According to The Points Guy’s points and loyalty team, Royal Caribbean cruise ships sometimes skip time changes at selected ports to avoid adjusting ship time three consecutive days. Passengers planning shore excursions should confirm which time the ship follows at each port, as the ship’s clocks may not align with local time. Additionally, cellphones in airplane mode relying on satellite-based internet cannot always update to the correct time automatically. Travelers should bring an analog watch or a standalone alarm clock as a backup reference when uncertain whether their device will synchronize properly during a cruise.
Verify Schedules Before Booking Travel During Time Change Periods
The overarching lesson for travelers involves confirming time zone specifics and daylight saving schedules for each destination before departure. Spring and fall trips demand particular attention, as countries and regions change clocks on different dates. Losing or gaining an unexpected hour poses minor inconvenience compared to the real consequences: arriving late to important events or, worst of all, missing flights entirely.
Source: The Points Guy Articles
Frequently Asked Questions
When do most European countries change their clocks?
Most European countries, following the U.K. schedule, move clocks forward one hour on the last Sunday in March and backward one hour on the last Sunday in October. This differs from the U.S., which changes on the second Sunday in March and the first Sunday in November.
Which countries don't observe daylight saving time?
Approximately 66% of the world's countries do not observe daylight saving time. Several non-European Union countries in Europe—including Armenia, Azerbaijan, Belarus, Georgia, Iceland, Russia and Turkey—stay on standard time year-round. In the U.S., Arizona and Hawaii do not observe it. In Canada, most of Saskatchewan, the Yukon and parts of Quebec and British Columbia do not observe it.
What time zone offset does Newfoundland use?
Newfoundland is 90 minutes ahead of Eastern Time rather than the standard 60-minute offset used throughout the rest of Atlantic Canada, which can cause confusion when scheduling events or flights with people in other time zones.
