Convert Singapore Time to Hawaii Standard Time
Instantly convert Singapore Time (SGT) to Hawaii Standard Time (HST) with our free online calculator.
Singapore Time
01:20:57 PM
Wed, Jun 24 (SGT)
Hawaii Standard Time
07:20:57 PM
Tue, Jun 23 (HST)
Convert a Specific Time
24-Hour Comparison
| SGT | HST |
|---|---|
| 12:00 AM | 6:00 AM(-1d) |
| 1:00 AM | 7:00 AM(-1d) |
| 2:00 AM | 8:00 AM(-1d) |
| 3:00 AM | 9:00 AM(-1d) |
| 4:00 AM | 10:00 AM(-1d) |
| 5:00 AM | 11:00 AM(-1d) |
| 6:00 AM | 12:00 PM(-1d) |
| 7:00 AM | 1:00 PM(-1d) |
| 8:00 AM | 2:00 PM(-1d) |
| 9:00 AM | 3:00 PM(-1d) |
| 10:00 AM | 4:00 PM(-1d) |
| 11:00 AM | 5:00 PM(-1d) |
| 12:00 PM | 6:00 PM(-1d) |
| 1:00 PM | 7:00 PM(-1d) |
| 2:00 PM | 8:00 PM(-1d) |
| 3:00 PM | 9:00 PM(-1d) |
| 4:00 PM | 10:00 PM(-1d) |
| 5:00 PM | 11:00 PM(-1d) |
| 6:00 PM | 12:00 AM |
| 7:00 PM | 1:00 AM |
| 8:00 PM | 2:00 AM |
| 9:00 PM | 3:00 AM |
| 10:00 PM | 4:00 AM |
| 11:00 PM | 5:00 AM |
How to Convert Singapore Time to Hawaii Standard Time
Formula
To convert Singapore Time (SGT) to Hawaii Standard Time (HST): Convert SGT to HST
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.
About Hawaii Standard Time (HST)
Hawaii Standard Time (HST, IANA: Pacific/Honolulu) is the time zone for the State of Hawaii and the Aleutian Islands of Alaska west of 169.5°W. HST is UTC-10:00 year-round and does not observe Daylight Saving Time per Hawaii Revised Statutes §1-31 (Hawaii opted out of the Uniform Time Act of 1966). When the US mainland switches to Daylight Saving Time in March, the offset from Hawaii to the West Coast (Pacific Time) becomes 3 hours instead of the standard 2 hours. Honolulu sees solar noon at approximately 12:30 PM HST in summer. HST is the same offset as Cook Island Time (CKT) and Tahiti Time (TAHT) in French Polynesia, allowing easy mental conversion across the central Pacific. Time-sensitive activities affected by HST include Pacific tsunami warning system coordination per NOAA NTWC, US military operations from Joint Base Pearl Harbor-Hickam, and the Mauna Kea astronomical observatories' nightly observing schedules.