Convert Greenwich Mean Time to Singapore Time
Instantly convert Greenwich Mean Time (GMT) to Singapore Time (SGT) with our free online calculator.
Greenwich Mean Time
05:20:58 AM
Wed, Jun 24 (GMT)
Singapore Time
01:20:58 PM
Wed, Jun 24 (SGT)
Convert a Specific Time
24-Hour Comparison
| GMT | SGT |
|---|---|
| 12:00 AM | 8:00 AM |
| 1:00 AM | 9:00 AM |
| 2:00 AM | 10:00 AM |
| 3:00 AM | 11:00 AM |
| 4:00 AM | 12:00 PM |
| 5:00 AM | 1:00 PM |
| 6:00 AM | 2:00 PM |
| 7:00 AM | 3:00 PM |
| 8:00 AM | 4:00 PM |
| 9:00 AM | 5:00 PM |
| 10:00 AM | 6:00 PM |
| 11:00 AM | 7:00 PM |
| 12:00 PM | 8:00 PM |
| 1:00 PM | 9:00 PM |
| 2:00 PM | 10:00 PM |
| 3:00 PM | 11:00 PM |
| 4:00 PM | 12:00 AM(+1d) |
| 5:00 PM | 1:00 AM(+1d) |
| 6:00 PM | 2:00 AM(+1d) |
| 7:00 PM | 3:00 AM(+1d) |
| 8:00 PM | 4:00 AM(+1d) |
| 9:00 PM | 5:00 AM(+1d) |
| 10:00 PM | 6:00 AM(+1d) |
| 11:00 PM | 7:00 AM(+1d) |
How to Convert Greenwich Mean Time to Singapore Time
Formula
To convert Greenwich Mean Time (GMT) to Singapore Time (SGT): Convert GMT to SGT
About Greenwich Mean Time (GMT)
Greenwich Mean Time (GMT, IANA: Europe/London) is the historic and current civil time of the United Kingdom (during winter), Ireland (during winter), Portugal mainland (during winter), Iceland (year-round), and most West African countries. GMT is set at UTC+0 — the time on the Prime Meridian (0° longitude) running through the Royal Observatory in Greenwich, southeast London. Established as the global time reference by the 1884 International Meridian Conference in Washington DC, GMT served as the world's primary civil-time reference from 1884 until 1972 when UTC (Coordinated Universal Time) was adopted as the new precision standard. The UK switches from GMT to British Summer Time (BST = UTC+1) at 01:00 GMT on the last Sunday of March and back to GMT at 02:00 BST on the last Sunday of October per EU Directive 2000/84/EC (UK retained this schedule after Brexit). GMT affects: London Stock Exchange (LSE) trading hours, BBC World Service broadcast time-stamps, all aviation NOTAMs and weather METARs which use UTC = GMT, and ICAO + IMO worldwide maritime/aviation coordination.
About Singapore Time (SGT)
Singapore Time (SGT, IANA: Asia/Singapore) is the civil time of the Republic of Singapore, set at UTC+8:00 year-round (no DST). Singapore historically used UTC+7:30 (with Malaya) before 1982, then adjusted to UTC+8:00 in January 1982 to align with major regional trading partners China + Hong Kong + Malaysia. The Singapore Public Utilities Board oversees official timekeeping per the legal-time reference at the National University of Singapore. SGT is identical in offset to China Standard Time (CST), Malaysia Time (MYT), Hong Kong Time (HKT), Philippine Time (PHT), Western Australia Time (AWST), Brunei Time (BNT) — making coordination across the Asia-Pacific tropics seamless. SGT serves the city-state of Singapore's approximately 5.9 million residents (citizens + permanent residents + foreign workers). Despite its small geographic size (728 km² — smaller than New York City's 5 boroughs), Singapore is one of Asia's most important financial centers. Affects: SGX (Singapore Exchange) trading hours 09:00-17:00 SGT, Port of Singapore Authority shipping operations (the world's second-busiest container port after Shanghai), Changi Airport flight scheduling (often the world's #1-ranked airport), and the Marina Bay Sands hotel + Gardens by the Bay operating hours.