Which of the following conversions for longitude and time, are correct?

1. 15° = one hour

2. 360° = 24 hours

Question

Question

This question was previously asked in

JKSSB SI Official Paper (Held On: 11 Dec 2022 Shift 1)

Answer 1

The Correct answer is 1 and 2.

Key Points

Longitude and time are closely related due to the Earth's rotation.
The Earth rotates 360º in 24 hours, which translates to 15º per hour.
This means that for every 15º of longitude, there is a one-hour difference in time.
This relationship is used to set standard time zones across the world.
The Prime Meridian (0º longitude) is the reference point for Coordinated Universal Time (UTC).
As you move east from the Prime Meridian, time increases by one hour for every 15º of longitude.
Conversely, as you move west from the Prime Meridian, time decreases by one hour for every 15º of longitude.
This system helps in maintaining consistent time zones globally, facilitating international communication and travel.

Additional Information

The Prime Meridian is located in Greenwich, London, and serves as the starting point for measuring longitude.
Time Zones are regions of the Earth that have the same standard time. They are established based on the 15º per hour rule.
Daylight Saving Time (DST) is a practice used in some regions to make better use of daylight during certain periods of the year, usually by setting the clock ahead by one hour.