Thursday, 19 November 2015

Geography Series 3

GEOGRAPHY SERIES 3



Hey Guys, What’s up? Good to see you are finding this series beneficial. In the last article, we have learnt about Latitude and Longitude.
Today we will have a quick overview of Time and Date.
Local Time: Earth makes one complete revolution of 360o in one day or 24 hours, it passes through 15o in one hour or 1o in 4 minutes.
•Earth rotates from west to east, so as we move 1o towards east, local time is advanced by 15 minutes and vice versa for westward movement.
•Local time of areas lying east of Prime Meridian is ahead of Greenwich Mean Time (GMT) and those lying westward are behind of GMT.
•World -divided into 24 Standard Time Zones- each differs 15o(in longitude)/1 hr (in time) from each other.
•Indian Govt has accepted 82.5o E for the standard time which is (82.5o X 4 minutes = 5 hrs 30 minutes ahead of GMT).
•US has 6 time zones, Russia has 9 time zones the highest.
International Date Line
latitude and longitude
•Imaginary line at 180o East longitude, demarcating the change of one calendar day to the next. It lies on the opposite side of Prime Meridian
•It is zigzagged to avoid splitting apart countries (such as eastern Russia and Alaska’s Aleutian Islands) into two days.
•When you cross the date line, you become a time traveler of sorts! Cross to the west and it’s one day later; cross back and you’ve “gone back in time.”
 

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