GMT to WEST Converter

Western European Summer Time (WEST) is exactly 1 hour ahead of Greenwich Mean Time (GMT). When it is 10:00 AM GMT, it is 11:00 AM WEST in Lisbon or Funchal.

WEST is used in mainland Portugal, the Autonomous Region of Madeira, the Canary Islands (Spain, as WEST/WEST offset), and the Faroe Islands (Denmark).

No. WEST operates at UTC+1, whereas CEST (used in France, Germany, Italy, Spain) operates at UTC+2. WEST is 1 hour behind CEST.

During winter, both GMT and WET (Western European Time) operate at UTC+0. However, when regions adopting WET switch to summer daylight saving time, they move to WEST (UTC+1).

WEST begins on the last Sunday of March at 1:00 AM UTC, when clocks advance 1 hour from WET (UTC+0) to WEST (UTC+1).

WEST ends on the last Sunday of October at 2:00 AM local time, when clocks turn back 1 hour to WET (UTC+0).

While the UK observes the same UTC+1 offset during summer, the UK legally terms its summer timezone British Summer Time (BST) rather than WEST.

Mainland Portugal uses 'Europe/Lisbon', Madeira uses 'Atlantic/Madeira', and the Canary Islands use 'Atlantic/Canary'.

To convert GMT to WEST, simply add 1 hour to the GMT clock. For example, 3:00 PM GMT plus 1 hour equals 4:00 PM WEST.

No. The Azores observe Azores Summer Time (AZOST, UTC+0) during summer, which is 1 hour behind mainland Portugal (WEST).

During summer, both the UK (on BST, UTC+1) and Portugal (on WEST, UTC+1) operate at UTC+1. However, if referencing baseline GMT (UTC+0), Lisbon is 1 hour ahead of GMT.

Major Atlantic ports in Lisbon, Leixões, and Las Palmas rely on WEST timestamps for vessel traffic management and customs processing.

WEST and IST (Irish Standard Time) both operate at UTC+1 during summer months, keeping identical clocks in Dublin and Lisbon.

Mainland Spain observes CEST (UTC+2) in summer. However, the Spanish territory of the Canary Islands observes WEST (UTC+1, locally referred to as WEST/Canary time).

Euronext Lisbon opens at 8:00 AM WEST (7:00 AM GMT baseline), providing early liquidity ahead of broader European trading sessions.

Yes. Standard digital calendars utilizing IANA database keys ('Europe/Lisbon', 'UTC') seamlessly update clock offsets during biannual spring and autumn changes.

Portugal adopted daylight saving time in 1916 during World War I to conserve energy, alternating between standard winter time and summer time.

Aviation GDS platforms store schedule baselines in UTC (GMT) and convert departure/arrival displays into local BST and WEST clock times.

The Canary Islands (geographically off the northwestern coast of Africa) observe WEST (UTC+1) during summer as part of Spain's autonomous territory.

During winter, CET is UTC+1 (same as WEST in summer). However, during summer, CET shifts to CEST (UTC+2), keeping Portugal (WEST, UTC+1) 1 hour behind Central Europe.