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London, United Kingdom to Philadelphia, PA, USA to Houston, TX, USA to SGT to Prague, Czechia

London
United Kingdom
GMT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Philadelphia
Pennsylvania, USA
EST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Houston
Texas, USA
CST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
SGT
Singapore Time
GMT +8
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Prague
Czechia
CET
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Compare London time with Philadelphia, Houston, SGT, and Prague 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 5 hours ahead of EST (Eastern Standard Time) and 6 hours ahead of CST (Central Standard Time) and 8 hours behind Singapore Time and 1 hour behind CET (Central European Time)
12:00 pm12:00 in London, United Kingdom is 7:00 am07:00 in Philadelphia, PA, USA and is 6:00 am06:00 in Houston, TX, USA and is 8:00 pm20:00 in SGT and is 1:00 pm13:00 in Prague, Czechia

London to Philadelphia call time
Best time for a conference call or a meeting is between 2pm-5pm in London which corresponds to 9am-12pm in Philadelphia
London to Houston call time
Best time for a conference call or a meeting is between 3pm-5pm in London which corresponds to 9am-11am in Houston
London to SGT call time
Best time for a conference call or a meeting is between 8:30am-9:30am in London which corresponds to 4:30pm-5:30pm in SGT
London to Prague call time
Best time for a conference call or a meeting is between 9am-4pm in London which corresponds to 10am-5pm in Prague

12:00 pm12:00 GMT (Greenwich Mean Time) (London, United Kingdom). Offset UTC 0:00 hours
7:00 am07:00 EST (Eastern Standard Time) (Philadelphia, PA, USA). Offset UTC -5:00 hours
6:00 am06:00 CST (Central Standard Time) (Houston, TX, USA). Offset UTC -6:00 hours
8:00 pm20:00 Singapore Time (SGT). Offset UTC +8:00 hours
1:00 pm13:00 CET (Central European Time) (Prague, Czechia). Offset UTC +1:00 hour

12:00 pm12:00 London, United Kingdom / 7:00 am07:00 Philadelphia, PA, USA / 6:00 am06:00 Houston, TX, USA / 8:00 pm20:00 SGT / 1:00 pm13:00 Prague, Czechia

London, United KingdomPhiladelphia, PA, USAHouston, TX, USASGTPrague, Czechia
12am (midnight)7pm6pm8am1am
1am8pm7pm9am2am
2am9pm8pm10am3am
3am10pm9pm11am4am
4am11pm10pm12pm (noon)5am
5am12am (midnight)11pm1pm6am
6am1am12am (midnight)2pm7am
7am2am1am3pm8am
8am3am2am4pm9am
9am4am3am5pm10am
10am5am4am6pm11am
11am6am5am7pm12pm (noon)
12pm (noon)7am6am8pm1pm
1pm8am7am9pm2pm
2pm9am8am10pm3pm
3pm10am9am11pm4pm
4pm11am10am12am (midnight)5pm
5pm12pm (noon)11am1am6pm
6pm1pm12pm (noon)2am7pm
7pm2pm1pm3am8pm
8pm3pm2pm4am9pm
9pm4pm3pm5am10pm
10pm5pm4pm6am11pm
11pm6pm5pm7am12am (midnight)
00:0019:0018:0008:0001:00
01:0020:0019:0009:0002:00
02:0021:0020:0010:0003:00
03:0022:0021:0011:0004:00
04:0023:0022:0012:0005:00
05:0000:0023:0013:0006:00
06:0001:0000:0014:0007:00
07:0002:0001:0015:0008:00
08:0003:0002:0016:0009:00
09:0004:0003:0017:0010:00
10:0005:0004:0018:0011:00
11:0006:0005:0019:0012:00
12:0007:0006:0020:0013:00
13:0008:0007:0021:0014:00
14:0009:0008:0022:0015:00
15:0010:0009:0023:0016:00
16:0011:0010:0000:0017:00
17:0012:0011:0001:0018:00
18:0013:0012:0002:0019:00
19:0014:0013:0003:0020:00
20:0015:0014:0004:0021:00
21:0016:0015:0005:0022:00
22:0017:0016:0006:0023:00
23:0018:0017:0007:0000:00

London Information

Time Zone

Abbreviation / Name
BST - British Summer Time
GMT - Greenwich Mean Time
UTC / GMT Offset
+1:00 hours during British Summer Time, currently in use.
+0:00 hours during Greenwich Mean Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 1am to 2amSunday, March 29, 2026 at 1:00 am local time. DST starts annually on the last Sunday of March. Clocks are turned forward 1 hour to Sunday, March 29, 2026 at 2:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1amSunday, October 25, 2026 at 2:00 am local time. DST ends annually on the last Sunday of October. Clocks are turned backward 1 hour to Sunday, October 25, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

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
7,556,900
Currency
Pound (GBP)
Geographic Coordinates
51° 30' N Latitude / 0° 07' W Longitude
International Dialing Code
+44

Philadelphia Information

Time Zone

Abbreviation / Name
EDT - Eastern Daylight Time
EST - Eastern Standard Time
UTC / GMT Offset
-4:00 hours during Eastern Daylight Time, currently in use.
-5:00 hours during Eastern Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1amSunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Philadelphia Facts

Country
USA
State
Pennsylvania
Alternative Names
Coaquannock, Fi-sang, Fi-sàng, Filadehl'fija, Filadel'fi, Filadel'fij, Filadel'fija, Filadelfi, Filadelfia, Filadelfiae, Filadelfie, Filadelfii, Filadelfija, Filadelfijo, Filadelfio, Filadelfiya, Filadelfiye, Filadelfiä, Filadèlfia, Filadélfia, Filadélfiye, Ga-na-ta-jen-go-na, PHL, Philadelpheia, Philadelphia, Philadelphie, Philly, Quequenakee, Tsi wahswen:to Tekahso:ken, Tsi wahswèn:to Tekahsó:ken, fei cheng, fi la delfeiy, filadailafi'a, firaderufia, flaڈylfya, fyladlfya, fyladlfya pnsylwanya, philadelaphiya, philadelphiya, piladelpia, pilatelpiya, pilladelpia, pyldlpyh, Φιλαδέλφεια, Филаделфиа, Филаделфия, Филаделфија, Филадельфи, Филадельфий, Филадельфия, Філадельфія, Філадэльфія, Ֆիլադելֆիա, פילאדעלפיע, פילדלפיה, فلاڈیلفیا, فلاڈیلفیا، پنسلوانیا, فيلادلفيا, فیلادلفیا, فیلادلفیا، پنسیلوانیا, फिलाडेल्फिया, ফিলাডেলফিয়া, ਫ਼ਿਲਾਡੈਲਫ਼ੀਆ, ફિલાડેલ્ફિયા, பிலடெல்பியா, ఫిలడెల్ఫియా, ಫಿಲಡೆಲ್ಫಿಯಾ, ഫിലഡെൽഫിയ, ฟิลาเดลเฟีย, ဖီလာဒဲလ်ဖီးယားမြို့, ფილადელფია, ፊላዴልፊያ, ភីឡាដេលផ្យា, フィラデルフィア, 費城, 费城, 필라델피아
Population
1,567,442
Currency
Dollar (USD)
Geographic Coordinates
39° 57' N Latitude / 75° 09' W Longitude
International Dialing Code
+1

Houston Information

Time Zone

Abbreviation / Name
CDT - Central Daylight Time
CST - Central Standard Time
UTC / GMT Offset
-5:00 hours during Central Daylight Time, currently in use.
-6:00 hours during Central Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 2am to 1amSunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Houston Facts

Country
USA
State
Texas
Alternative Names
Chiouston, HOU, Hiu-su-tun, Hiustonas, Hiû-sṳ̂-tûn, Hjuston, Hjustona, Hjūstona, Houston, Houston City, Hustonia, Hyuston, Kh'juston, Khjustn, Khjustan, Khjuston, hi'ustana, hiustʼoni, hiws tan, hiyustan, hou si dun, husatana, hyuseuteon, hyustan, hyustana, hyusuton, hywstn, hywstwn, xiu si dun, ywstwn, Χιούστον, Хьюстон, Хюстан, Хюстон, Хюстън, Хјустон, Հյուստոն, היוסטן, יוסטון, هيوستن, هیوستون, ھیووستن, ہywsٹn, ہیوسٹن, ह्युस्टन, হিউস্টন, ਹੂਸਟਨ, હ્યુસ્ટન, ஹியூஸ்டன், హ్యూస్టన్, ഹ്യൂസ്റ്റൺ, ฮิวสตัน, ဟူစတန်မြို့, ჰიუსტონი, ሂውስተን, ヒューストン, 休斯敦, 休斯頓, 侯斯頓, 휴스턴
Population
2,296,224
Currency
Dollar (USD)
Geographic Coordinates
29° 45' N Latitude / 95° 21' W Longitude
International Dialing Code
+1

Singapore Time

Offset: SGT is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Singapore

Principal Cities: The largest city in the SGT time zone is Singapore in Singapore, with about 3.548 million people.

Daylight Saving: Clocks in Singapore Time (SGT) do not change for daylight saving time, so SGT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

SGT Time Zone Geo Map
SGT timezone map

SGT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +08 - basic short
  • +0800 - basic
  • +08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for SGT
  • H - short form of 'Hotel'
Time zones with the GMT +8 offset:
  • ACT - ASEAN Common Time
  • AWST - Australian Western Standard Time
  • BNT - Brunei Darussalam Time
  • CAST - Casey Time
  • CHOT - Choibalsan Time
  • CST - China Standard Time
  • H - Hotel Time Zone
  • HKT - Hong Kong Time
  • HOVST - Hovd Summer Time
  • IRKT - Irkutsk Time
  • KRAST - Krasnoyarsk Summer Time
  • MYT - Malaysia Time
  • PHT - Philippine Time
  • SGT - Singapore Time
  • ULAT - Ulaanbaatar Time
  • WITA - Central Indonesian Time

Prague Information

Time Zone

Abbreviation / Name
CEST - Central European Summer Time
CET - Central European Standard Time
UTC / GMT Offset
+2:00 hours during Central European Summer Time, currently in use.
+1:00 hours during Central European Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 2am to 3amSunday, March 29, 2026 at 2:00 am local time. DST starts annually on the last Sunday of March. Clocks are turned forward 1 hour to Sunday, March 29, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 3am to 2amSunday, October 25, 2026 at 3:00 am local time. DST ends annually on the last Sunday of October. Clocks are turned backward 1 hour to Sunday, October 25, 2026 at 2:00 am local standard time instead. Also called Fall Back or switch to Winter Time.

Prague Facts

Country
Czechia
Alternative Names
PRG, Praag, Prag, Praga, Pragae, Prago, Prague, Praha, Pràg, Prág, Prága, Prâg, Prāga, bragh, bu la ge, peulaha, prag, praga, prak, prg, puraha, Πράγα, Праг, Прагæ, Прага, פראג, براغ, پراگ, پراگا, ܦܪܓ, প্রাগ, ปราก, པུ་ལ་ཁེ, პრაღა, ፕራግ, プラハ, 布拉格, 프라하
Population
1,165,581
Currency
Koruna (CZK)
Geographic Coordinates
50° 05' N Latitude / 14° 25' E Longitude
International Dialing Code
+420
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT