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Let's find out the relation between time and longitude. Look at the video here for your reference

Select any particular place that is at a distance from your location. And find out the time at that place. (Hint : It takes 4 minutes to travel from one longitude to another. So, generally 1 degree difference in Longitude, causes a difference of 4 minutes. To find the longitude, simply compare your local time with the time at a known location and multiply by 15 °/hr.)