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  Newark 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.
 When 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
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! 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.
Answer by ikleyn(52786)  (Show Source):
You can put this solution on YOUR website! .
Pay attention on how I edited your post !
Solution
1) Honolulu Newark
8 am HAST 1 PM EST same day <<<---=== Statement 1
The difference in clocks readings is 4 + 1 = 5 hours.
2) Honolulu Newark
(landing) (take off)
flight-1
6 pm HAST <----------- 12 pm EST (noon) <<<---=== Statement 2
This flight duration is 6 + 5 = 11 hours.
3) Honolulu Newark
(take off) (landing)
flight-2
7 am HAST -----------> ??? <<<---=== QUESTION
7 am HAST = 7 + 5 = 12 pm EST (noon at Newark).
This flight duration is the same 11 hours.
The landing at Newark is at 12 pm EST + 11 hours = 11 pm EST same day.
ANSWER. The landing time under the question is 11 pm EST in Newark same day.
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Forget everything that Alan wrote in his post -- it all is IRRELEVANT.
You are "a general public" ;
You know nothing of what Alan writes in his post -- and you DO NOT NEED to know it if you are not a professional pilot.
You need to solve the problem based on your common sense --
-- And you do it as I showed it in my post.
* * * * * S O L V E D * * * * *
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