BST to SGT Time Converter
SGT is 7 hours ahead of BST. BST is UTC+1:00, and SGT is UTC+8:00.
Best Time to Call Between BST and SGT
Both zones are inside normal business hours between 9:00 AM and 10:00 AM BST — that's 4:00 PM to 5:00 PM SGT. That's a 1-hour window.
both at work BST only SGT only neither — hours along the strip are BST.
Common Times Converted
BST on the left, SGT on the right.
BST to SGT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| BST | SGT | Working hours |
|---|---|---|
| 12:00 AM | 7:00 AM | — |
| 1:00 AM | 8:00 AM | — |
| 2:00 AM | 9:00 AM | SGT only |
| 3:00 AM | 10:00 AM | SGT only |
| 4:00 AM | 11:00 AM | SGT only |
| 5:00 AM | 12:00 PM | SGT only |
| 6:00 AM | 1:00 PM | SGT only |
| 7:00 AM | 2:00 PM | SGT only |
| 8:00 AM | 3:00 PM | SGT only |
| 9:00 AM | 4:00 PM | Both zones |
| 10:00 AM | 5:00 PM | BST only |
| 11:00 AM | 6:00 PM | BST only |
| 12:00 PM | 7:00 PM | BST only |
| 1:00 PM | 8:00 PM | BST only |
| 2:00 PM | 9:00 PM | BST only |
| 3:00 PM | 10:00 PM | BST only |
| 4:00 PM | 11:00 PM | BST only |
| 5:00 PM | 12:00 AM next day | — |
| 6:00 PM | 1:00 AM next day | — |
| 7:00 PM | 2:00 AM next day | — |
| 8:00 PM | 3:00 AM next day | — |
| 9:00 PM | 4:00 AM next day | — |
| 10:00 PM | 5:00 AM next day | — |
| 11:00 PM | 6:00 AM next day | — |
What BST and SGT Actually Are
BST — British Summer Time
London, Manchester, Birmingham, Glasgow, and the rest of the UK from late March to late October. Standing at UTC+1:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to GMT. BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.
British Summer Time began in 1916 as a wartime fuel-saving measure and has run every year since, making it one of the oldest continuous daylight saving schemes in the world.
SGT — Singapore Time
Singapore. Standing at UTC+8:00 as written, and the region does not change its clocks, so that offset holds all year.
Singapore sits at a longitude that would put it near UTC+7, but moved to UTC+8 in 1982 to align with Malaysia and Hong Kong — a trade decision rather than a solar one.
What This Means in Practice
This gap is not fixed
BST changes its clocks and SGT does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, October 25, 2026 unless someone resets it.
Major Cities in Each Zone
Cities on BST
Cities on SGT
Frequently Asked Questions
What is the time difference between BST and SGT?
SGT is 7 hours ahead of BST.
What is 9:00 AM BST in SGT?
9:00 AM BST is 4:00 PM SGT.
What are the best hours to schedule a call between BST and SGT?
Between 9:00 AM and 10:00 AM BST, which is 4:00 PM to 5:00 PM SGT. Both sides are inside normal business hours through that window.
Does the difference between BST and SGT change during the year?
Yes. BST observes daylight saving and SGT does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, October 25, 2026.
Does BST always mean British Summer Time?
BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.