Convert UK time (GMT/BST) to Coordinated Universal Time (UTC), with daylight saving applied for the exact date you pick.
Tue, Oct 27
Tue, Oct 27 Same day
| Su | Mo | Tu | We | Th | Fr | Sa |
|---|
GMT 9 to 5 UTC 9 to 5
UTC is the same time as GMT.
Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.
Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.
Shaded rows fall inside working hours in both places.
| London (GMT) | Greenwich meridian (UTC) | Working hours |
|---|---|---|
| 12:00 AM | 12:00 AM | |
| 1:00 AM | 1:00 AM | |
| 2:00 AM | 2:00 AM | |
| 3:00 AM | 3:00 AM | |
| 4:00 AM | 4:00 AM | |
| 5:00 AM | 5:00 AM | |
| 6:00 AM | 6:00 AM | |
| 7:00 AM | 7:00 AM | |
| 8:00 AM | 8:00 AM | |
| 9:00 AM | 9:00 AM | Both working |
| 10:00 AM | 10:00 AM | Both working |
| 11:00 AM | 11:00 AM | Both working |
| 12:00 PM | 12:00 PM | Both working |
| 1:00 PM | 1:00 PM | Both working |
| 2:00 PM | 2:00 PM | Both working |
| 3:00 PM | 3:00 PM | Both working |
| 4:00 PM | 4:00 PM | Both working |
| 5:00 PM | 5:00 PM | |
| 6:00 PM | 6:00 PM | |
| 7:00 PM | 7:00 PM | |
| 8:00 PM | 8:00 PM | |
| 9:00 PM | 9:00 PM | |
| 10:00 PM | 10:00 PM | |
| 11:00 PM | 11:00 PM |
Every hour of the UK time day, plus the common half hours, and their UTC equivalents. The second column covers the part of the year when the clocks are on a different gap.
| UK time | UTC 1 h behind, most of the year (210 days in 2026) | UTC 0 h ahead, about 22 weeks in 2026 |
|---|---|---|
| 12:00 AM | 11:00 PM (previous day) | 12:00 AM |
| 1:00 AM | 12:00 AM | 1:00 AM |
| 2:00 AM | 1:00 AM | 2:00 AM |
| 3:00 AM | 2:00 AM | 3:00 AM |
| 4:00 AM | 3:00 AM | 4:00 AM |
| 5:00 AM | 4:00 AM | 5:00 AM |
| 6:00 AM | 5:00 AM | 6:00 AM |
| 7:00 AM | 6:00 AM | 7:00 AM |
| 8:00 AM | 7:00 AM | 8:00 AM |
| 9:00 AM | 8:00 AM | 9:00 AM |
| 9:30 AM | 8:30 AM | 9:30 AM |
| 10:00 AM | 9:00 AM | 10:00 AM |
| 10:30 AM | 9:30 AM | 10:30 AM |
| 11:00 AM | 10:00 AM | 11:00 AM |
| 11:30 AM | 10:30 AM | 11:30 AM |
| 12:00 PM | 11:00 AM | 12:00 PM |
| 12:30 PM | 11:30 AM | 12:30 PM |
| 1:00 PM | 12:00 PM | 1:00 PM |
| 1:30 PM | 12:30 PM | 1:30 PM |
| 2:00 PM | 1:00 PM | 2:00 PM |
| 2:30 PM | 1:30 PM | 2:30 PM |
| 3:00 PM | 2:00 PM | 3:00 PM |
| 3:30 PM | 2:30 PM | 3:30 PM |
| 4:00 PM | 3:00 PM | 4:00 PM |
| 4:30 PM | 3:30 PM | 4:30 PM |
| 5:00 PM | 4:00 PM | 5:00 PM |
| 5:30 PM | 4:30 PM | 5:30 PM |
| 6:00 PM | 5:00 PM | 6:00 PM |
| 7:00 PM | 6:00 PM | 7:00 PM |
| 8:00 PM | 7:00 PM | 8:00 PM |
| 9:00 PM | 8:00 PM | 9:00 PM |
| 10:00 PM | 9:00 PM | 10:00 PM |
| 11:00 PM | 10:00 PM | 11:00 PM |
Each row is a stretch of days with one constant difference, split at every clock change.
| Dates | UK time | UTC | Difference |
|---|---|---|---|
| Thu, Jan 1, 2026 until Sun, Mar 29, 2026 | GMT | UTC | Same time |
| Sun, Mar 29, 2026 until Sun, Oct 25, 2026 | BST | UTC | UTC 1 h behind |
| Sun, Oct 25, 2026 until Sun, Mar 28, 2027 | GMT | UTC | Same time |
| Sun, Mar 28, 2027 until Sun, Oct 31, 2027 | BST | UTC | UTC 1 h behind |
| Sun, Oct 31, 2027 until Sat, Jan 1, 2028 | GMT | UTC | Same time |
UK time is Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October.
Coordinated Universal Time is the reference every time zone is measured from. It never changes for daylight saving time. Servers, aviation, logs and APIs use it because it is unambiguous.
UTC is 1 hour behind BST for most of the year (210 days in 2026). The gap is 0 hours for about 22 weeks in 2026.
UTC is 1 hour behind BST for most of the year (210 days in 2026). The gap is 0 hours for about 22 weeks in 2026. Type any UK time time into the UK time to UTC converter to see the UTC time for any date.
9:00 AM BST is 8:00 AM UTC for most of the year (210 days in 2026). 9:00 AM GMT is 9:00 AM UTC for about 22 weeks in 2026.
12:00 PM BST is 11:00 AM UTC for most of the year (210 days in 2026). 12:00 PM GMT is 12:00 PM UTC for about 22 weeks in 2026.
10:00 AM BST is 9:00 AM UTC for most of the year (210 days in 2026). 10:00 AM GMT is 10:00 AM UTC for about 22 weeks in 2026.
5:00 PM BST is 4:00 PM UTC for most of the year (210 days in 2026). 5:00 PM GMT is 5:00 PM UTC for about 22 weeks in 2026.
No, UTC is behind UK time. UTC is 1 hour behind BST for most of the year (210 days in 2026). The gap is 0 hours for about 22 weeks in 2026.
Working days of 9 AM to 5 PM overlap from 10:00 AM to 5:00 PM BST, which is 9:00 AM to 4:00 PM UTC while BST and UTC apply.
UK time changes its clocks twice a year; Coordinated Universal Time does not. The next change is on Sunday, March 28, 2027 in UK time.