Changes

Although GMT has been replaced by atomic time (Coordinated Universal Time or UTC) it is still widely regarded as the correct time for every international time zone.

Although GMT has been replaced by atomic time (Coordinated Universal Time or UTC) it is still widely regarded as the correct time for every international time zone.

Allowance also needs to be made for [[Daylight Saving Time]], or Summer Time Zones, where applicable, which include an offset of an extra hour.

Allowance also needs to be made for Daylight Saving Time, or Summer Time Zones, where applicable, which include an offset of an extra hour.

The '''International Date Line''' is an imaginary line running approximately between time GMT+12 and GMT-12, that separates two consecutive [[calendar]] days. The date in the Eastern hemisphere, to the left of the line - time zone M (Mike)- is always one day ahead of the date in the Western hemisphere, to the right of the International Date Line - time zone Y (Yankee).

The '''International Date Line''' is an imaginary line running approximately between time GMT+12 and GMT-12, that separates two consecutive [[calendar]] days. The date in the Eastern hemisphere, to the left of the line - time zone M (Mike)- is always one day ahead of the date in the Western hemisphere, to the right of the International Date Line - time zone Y (Yankee).