When a flights departs in the middle of the winter daylight saving time switch, what is the actual departure time? [duplicate]

If we take a look at JFK's flight schedule for this year's November 6th (which is the winter DST switch date), there are plenty of flights departing between 1am and 2am. For example, a Cathay Pacific flight to Hong Kong at 1:25am.

If one were to actually buy that flight, what would be departure time printed on the ticket? And when would the plane actually depart — on the "first" or "second" 1:25am?

air-travel timezones

Best Answer

The ticket always indicates the local time at the departure and arrival. So it will indicate whatever is the local time for that flight. Tickets do not indicate the timezone.

Due to the complication with timezones and winter/summer times aviation always uses UTC (sometimes also called zulu time, named due to the letter Z which was designated for GMT) for flight planning purposes.

So, for the purposes of flight planning, the flight is scheduled for 0525Z on November 6; and for the purpose of ticketing, it is scheduled for 0125.

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Does my flight time change with daylight savings?

\u200bDaylight savings time will affect local scheduled flight times the same way it will affect your live television schedule. It will affect apparent flight duration if the departure and arrival airports switch to DST on different days of the year, but actual time in the air will remain the same.

What hour repeats for Daylight Savings?

When in the morning? In the U.S., clocks change at 2:00 a.m. local time. In spring, clocks spring forward from 1:59 a.m. to 3:00 a.m.; in fall, clocks fall back from 1:59 a.m. to 1:00 a.m. In the EU, clocks change at 1:00 a.m. Universal Time.

How is daylight savings time calculated?

In most of the US, DST starts on the second Sunday of March and ends on the first Sunday of November, at 2:AM both times. The second Sunday in March will always be between the 8th and the 14th inclusive. The first Sunday in November will always be between the 1st and 7th inclusive.

Is daylight savings time the real time?

Daylight Saving Time (DST) is the practice of setting the clocks forward one hour from standard time during the summer months, and back again in the fall, in order to make better use of natural daylight.

Daylight Saving Time - How Is This Still A Thing?: Last Week Tonight with John Oliver (HBO)

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