calculate the longitude of placeS where it is 7 am place B (30°E) where it is 5 pm
Answers
Answer:
Do I get the choice of latitude? Great!
Clearly you’re looking for a time zone with offset 3 hours ahead of the time zone at 60° E.
At 60° E I choose Mashhad - Wikipedia
, time zone offset currently UTC+4:30. So I’m looking for a time zone with offset 7:30.
That’s simple: there is none. Singapore and West Malaysia used to have that offset, but they moved to UTC+8. So your answer is “nowhere”.
Basically, you can't answer the question with only the information you provide, even if many (wrong) answers think that you can. The whole world is covered by time zones, so you need to find a time zone corresponding to your places. And for that you need to know the latitudes, and also the time of year. Any answer that you read that starts with something like “every 1° is equal to 4 minutes” or “15° is equal to one hour” is wrong. That refers to (mean) Solar time - Wikipedia
, and that's not the way we tell the time any more. It hasn’t been for over 150 years.
To get all possible answers, take a look at Greg's time conversion answers
and the time zone map at List of UTC time offsets
Explanation: