London to Seattle Time Converter

Updating current time…
London
United KingdomGMT
UTC+0
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Seattle
Washington, USAPST
UTC−8
8h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

12:00 pm12:00 GMT (UTC+0), Nov 7, 2026 = 4:00 am04:00 PST (UTC-8), Nov 7, 2026

London is 8 hours ahead of Seattle.

How the time difference changes

For most of the year, London is 8 hours ahead of Seattle. From Mar 14 to Mar 28, 2027, and from Oct 31 to Nov 7, 2027, London is 7 hours ahead of Seattle.

For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 1:00 am to 10:00 am in Seattle. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 2:00 am to 11:00 am in Seattle.For most of the year, working hours of 09:00 to 18:00 in London correspond to 01:00 to 10:00 in Seattle. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 02:00 to 11:00 in Seattle.

Compare London time with Seattle time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

GMT (Greenwich Mean Time) is 8 hours ahead of PST (Pacific Standard Time).
12:00 pm12:00 in London, United Kingdom is 4:00 am04:00 in Seattle, WA, USA

London to Seattle call time
Best time for a conference call or a meeting is between 5pm-6pm17:00-18:00 in London which corresponds to 9am-10am09:00-10:00 in Seattle

12:00 pm12:00 GMT (Greenwich Mean Time) (London, United Kingdom). Offset UTC 0:00 hours
4:00 am04:00 PST (Pacific Standard Time) (Seattle, WA, USA). Offset UTC -8:00 hours

12:00 pm12:00 London, United Kingdom / 4:00 am04:00 Seattle, WA, USA

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
London, United KingdomSeattle, WA, USA
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London Time Zone and Facts

Time Zone

Abbreviation / Offset
GMT – Greenwich Mean Time, UTC+0 (now)
BST – British Summer Time, UTC+1 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 28, 2027 at 1:00 amSunday, March 28, 2027 at 01:00: clocks go forward 1 hour to 2:00 am02:00 (BST). DST starts on the last Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, October 31, 2027 at 2:00 amSunday, October 31, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (GMT). DST ends on the last Sunday of October each year. Also called Fall Back or Winter Time.
Clock Changes
United Kingdom daylight saving time · Clock changes worldwide

London Facts

Country
United Kingdom
Alternative Names
ILondon, LON, Lakana, Landan, Landen, Ljondan, Llundain, Lodoni, Londain, Londan, Londar, Londe, Londen, Londin, Londinium, Londino, Londn, London, London osh, Londona, Londonas, Londoni, Londono, Londons, Londonu, Londra, Londres, Londrez, Londri, Londro, Londye, Londyn, Londýn, Lonn, Lontoo, Loundres, Luan GJon, Lun-tun, Lunden, Lundra, Lundun, Lundunir, Lundúnir, Lung-dung, Lunnainn, Lunnin, Lunnon, Luân Đôn, Lùn-tûn, Lùng-dŭng, Lûn-tun, Lākana, Lůndůn, Lọndọnu, Ranana, Rānana, ilantan, ladana, landan, landana, leondeon, lndn, london, londoni, lun dui, lun dun, lwndwn, lxndxn, rondon, Łondra, Λονδίνο, Лондан, Лондон, Лондон ош, Лондонъ, Лёндан, Լոնդոն, לאנדאן, לונדון, لأندأن, لندن, لوندون, لەندەن, ܠܘܢܕܘܢ, लंडन, लंदन, लण्डन, लन्डन्, लन्दन, লন্ডন, ਲੰਡਨ, લંડન, ଲଣ୍ଡନ, இலண்டன், లండన్, ಲಂಡನ್, ലണ്ടൻ, ලන්ඩන්, ลอนดอน, ລອນດອນ, ལོན་ཊོན།, လန်ဒန်မြို့, ლონდონი, ለንደን, ᎫᎴ ᏗᏍᎪᏂᎯᏱ, ロンドン, 伦敦, 倫敦, 런던
Population
8,961,989
Currency
Pound (GBP)
Geographic Coordinates
51° 30' N Latitude / 0° 07' W Longitude
International Dialing Code
+44
More About London
London time now
Current Time in the United Kingdom
UK time now

Seattle Time Zone and Facts

Time Zone

Abbreviation / Offset
PST – Pacific Standard Time, UTC-8 (now)
PDT – Pacific Daylight Time, UTC-7 (daylight saving time)
Daylight Saving Time Starts
123456789101112Sunday, March 14, 2027 at 2:00 amSunday, March 14, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (PDT). DST starts on the 2nd Sunday of March each year. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
123456789101112Sunday, November 7, 2027 at 2:00 amSunday, November 7, 2027 at 02:00: clocks go back 1 hour to 1:00 am01:00 (PST). DST ends on the 1st Sunday of November each year. Also called Fall Back or Winter Time.
Clock Changes
USA daylight saving time · Clock changes worldwide

Seattle Facts

Country
USA
State
Washington
Alternative Names
SEA, Seatl, Seattle, Seattlum, Siatl, Siatul, Siehtl, Sietl, Sietla, Sietlas, Sijetl, Siyaatil, Séatl, ciyattil, shiatoru, si'aitala, siaeteul, sietʼli, siyatal, siyatala, syatl, xi ya tu, Σιάτλ, Сиатъл, Сиетл, Сиэтл, Сијетл, Сіэтл, Сієтл, Սիեթլ, סיאטל, سياتل, سیئٹل, سیاتل, سیاٹل, सिअ‍ॅटल, सीऐटल, সিয়াটল, சியாட்டில், ಸಿಯಾಟಲ್, ซีแอตเทิล, სიეტლი, ስያትል, ស៊ីតថល, シアトル, 西雅圖, 시애틀
Population
780,995
Currency
Dollar (USD)
Geographic Coordinates
47° 36' N Latitude / 122° 19' W Longitude
International Dialing Code
+1
More About Seattle
Seattle time now