Greenwich Mean Time

Time zones of Europe in relation to UTC:

blue	Western European Time (UTC+0) Western European Summer Time (UTC+1)
light blue	Western European Time (UTC+0)
red	Central European Time (UTC+1) Central European Summer Time (UTC+2)
yellow	Eastern European Time (UTC+2) Eastern European Summer Time (UTC+3)
orange	Kaliningrad Time (UTC+3)
green	Moscow Time (UTC+4)

Light colours indicate countries that do not observe summer time.

Greenwich Mean Time is an internationally standard time format. It is the main time zone in several countries, including the United Kingdom and Portugal.

It is similar to UTC, however there are some small differences between the two.