Question

When it is 7:30 pm on August 16 in Greenwich, it is ____ (time) on ______ (date) in Chennai.

Answer 1

Hint:There are different time zones all over the world because as the Earth rotates there are different parts of the earth that have sunlight or darkness, giving us day and night, since there are different parts that enter and exit daylight at different times there comes a need to have different time zones. Therefore, the same time or even day won’t mean that the same is at another place.

Complete Step by Step Solution:The Greenwich London time zone is the same as the Coordinated Universal Time and is also known as Greenwich Mean Time (GMT). So, this is the standard time zone. The conversion of Indian Standard Time (IST) according to the UTC is UTC+05:30 i.e. the time in Greenwich will be +05:30 hrs in India. So, if the time in Greenwich is 7:30 pm then the time in India will be 7:30+5:30 which will be 1:00 am the next day. Hence, 7:30 pm on August 16 in Greenwich will be 1:00 am on 17 August in Chennai.

Note:Most of the time zones are offsets made by having offsets of the Coordinated Universal Time by a whole number of hours from UTC-12:00 to UTC+14:00 but a few zones are offset by 30 or 45 mins like UTC-03:30 or UTC+05:30. Some countries even use daylight saving time for a part of the year in which they adjust their local clock time by an hour.