Western European Summer Time

Western European Summer Time (WEST) is a summer daylight saving time scheme, 1 hour ahead of Coordinated Universal Time. It is used in the following places:

• the Canary Islands
• the Faroe Islands
• the Republic of Ireland
• the Crown dependencies
• the Madeira islands
• Continental Portugal
• the United Kingdom
• Morocco in North Africa

BST redirects here, for the Bangladeshi time zone, see Bangladesh Standard Time

Time in Europe:

Light Blue	Western European Time / Greenwich Mean Time (UTC)
Blue	Western European Time / Greenwich Mean Time (UTC)
	Western European Summer Time / British Summer Time / Irish Standard Time (UTC+1)
Red	Central European Time (UTC+1)
	Central European Summer Time (UTC+2)
Yellow	Eastern European Time / Kaliningrad Time (UTC+2)
Ochre	Eastern European Time (UTC+2)
	Eastern European Summer Time (UTC+3)
Green	Moscow Time / Turkey Time (UTC+3)
Turquoise	Armenia Time / Azerbaijan Time / Georgia Time / Samara Time (UTC+4)

▉▉▉▉ Pale colours: Standard time observed all year
▉▉▉ Dark colours: Summer time observed

Western European Summer Time is also known by other names:

• British Summer Time (BST) in the United Kingdom.
• Irish Standard Time (IST)^[1] (Am Caighdeánach na hÉireann (ACÉ)^[2]) in Ireland. This is sometimes called Irish Summer Time (Am Samhraidh na hÉireann).

The scheme runs from the last Sunday in March to the last Sunday in October each year. At both the start and end of the schemes, clock changes take place at 01:00 UTC. During the winter, Greenwich Mean Time (UTC+0) is used.