Question 1142219
When It is 1 PM Eastern standard time (EST) in Newark, It is 8 AM Hawaiian Alrutian standard time (HAST) in Honolulu. A plane departs from new wok at 12 PM eastern standard time  and lands in Honolulu at 6:00 P.M HAST that same day. A second plane departs from Honolulu at 7:00 am HAST and travels for the same amount of time as the first plane. Whe did the second plane land in Newark? 
A)1:00 PM EST
B)7:00 PM EST
C)8:00 PM EST
D)11:00 P.M est
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Aircraft use "Zulu" time, which is Greenwich Mean time, or GMT.  That means all aircraft (with flight plans) use the same time, all over the world.
Even for "local" flights within the same time zone.
There's no AM and PM in aviation.
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Many time zones use ST (standard time) and then DST (Daylight Savings Time).  GMT and Zulu time does not change.
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1 PM (1300) in EWR (Newark) is 1800Z.
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A second plane departs from Honolulu at 7:00 am HAST and travels for the same amount of time as the first plane. ????
Where was the plane after the "same amount of time?"
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This is not anything the "general public" knows, or needs to know, but "You never outgrow your need for useless facts."
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Or,
knowledge is not important.
Getting the answer and moving on is important.
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Zulu time is used for all flight plans filed with ATC.  Being a "professional pilot" or a private pilot, or a student pilot is not relevant.
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Some oil companies also use Zulu time to deal with pumping station on pipelines.  It reduces confusion when pumping stations 100's of miles apart must coordinate events.
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I was on a flight from somewhere to somewhere else, and we had a problem with one of reverse thrusters on one of the engines.  We had to divert to an airport with a longer runway for landing.
A person in the adjacent seat said, "That pilot saved our lives."
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Think about that.
That is true for every flight if you don't die.
Once you leave the ground, the most difficult part of flying - landing - is not optional.
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This is not something most people need to know, but then, neither is algebra.