If you had the power to go as fast as you wanted and the power to walk on water, if you go from time zone to time zone (adjusting your watch to match the local time) what is the maximum amount of time it would take until you are forced to change your watch to the next day?
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48 hours.
Start on the western side of the international date line.
Suppose it is 12 am Saturday there. Then on the eastern side it's 12am Friday.
47 hours 59 minutes later, it is 11:59pm Sunday on the western side of the international date line and 11:59pm Saturday on the eastern side.
Travel around the world from east to west, crossing a time zone every 2 hours. When it's 2am at the international date line, you've moved to the timezone where it's 1am Saturday. When it's 4am at the international date line, you are where it's 2am. etc.
By turning your watch back 1 hour for every 2 that pass, you make Saturday last 48 hours.
Airplanes are easily capable of that speed, but you won't have time to enjoy the scenery.
Start on the western side of the international date line.
Suppose it is 12 am Saturday there. Then on the eastern side it's 12am Friday.
47 hours 59 minutes later, it is 11:59pm Sunday on the western side of the international date line and 11:59pm Saturday on the eastern side.
Travel around the world from east to west, crossing a time zone every 2 hours. When it's 2am at the international date line, you've moved to the timezone where it's 1am Saturday. When it's 4am at the international date line, you are where it's 2am. etc.
By turning your watch back 1 hour for every 2 that pass, you make Saturday last 48 hours.
Airplanes are easily capable of that speed, but you won't have time to enjoy the scenery.
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48 hours.
Or 24 from your perspective.
You would have to start at the dateline at midnight and move with 12:00 am until you came back to the other side of the date line. You would then have to stay there for 24 hours until the next day got to you.
If you cross the international date line after 24 hours have passed from the start then you would be crossing over into tomorrow and today would be over.
Or 24 from your perspective.
You would have to start at the dateline at midnight and move with 12:00 am until you came back to the other side of the date line. You would then have to stay there for 24 hours until the next day got to you.
If you cross the international date line after 24 hours have passed from the start then you would be crossing over into tomorrow and today would be over.