ZERO 0 Longitude
Pakistan standard time equivalent to +0500 UTC in world time
There are a few different time zones in North America. There is Atlantic Standard Time, Alaska Standard Time, Central Standard Time, Eastern Standard Time, Mountain Standard Time, Pacific Standard Time, and Hawaii-Aleutian Standard Time.
The world is divided into different time zones (In the US, you may see Eastern Standard Time or Central Standard time, etc) Indian Standard time is the common time zone for all of India.
40 time zones in the world.
4
8:00 PM Standard Eastern Time
The Prime Meridian, located in Greenwich, London, represents the 0° longitude for the world standard time, also known as Greenwich Mean Time (GMT).
Twenty four (24)
Its London
When time zones were adopted universally, time anywhere on the world became standard.
Both standard time and daylight saving time are recognized and used in different regions of the world. Standard time is the time established by law or agreement in a particular country or region, while daylight saving time is an adjustment made to standard time to extend daylight during the summer months. Both are considered correct within their respective regions and are followed accordingly.
The Earth is globe shaped, and the Sun can't illuminate the World at the same time. Therefore, the time is different as the World rotates. If the time was the same all over the World, when it was noon in daylight, it would be noon in darkness on the other side of the World. Standard time is maintained by making allowance for this differential using the Prime Meridian (zero longitude).