UTC to AST Converter
AST is 4 hours behind UTC. 9:00 AM UTC = 5:00 AM AST.
AST is 4 hours behind UTC at the moment. To convert UTC to AST, subtract 4 hours from the UTC time: 9:00 AM UTC = 5:00 AM AST.
UTC (UTC) is used in The world's time standard; used in aviation, computing and science. AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year).
AST here is Atlantic Standard Time, not Arabia Standard Time.
UTC to AST time conversion table
UTC to AST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| UTC | AST |
|---|---|
| 12:00 AM | 8:00 PM−1 |
| 1:00 AM | 9:00 PM−1 |
| 2:00 AM | 10:00 PM−1 |
| 3:00 AM | 11:00 PM−1 |
| 4:00 AM | 12:00 AM |
| 5:00 AM | 1:00 AM |
| 6:00 AM | 2:00 AM |
| 7:00 AM | 3:00 AM |
| UTC | AST |
|---|---|
| 8:00 AM | 4:00 AM |
| 9:00 AM | 5:00 AM |
| 10:00 AM | 6:00 AM |
| 11:00 AM | 7:00 AM |
| 12:00 PM | 8:00 AM |
| 1:00 PM | 9:00 AM |
| 2:00 PM | 10:00 AM |
| 3:00 PM | 11:00 AM |
| UTC | AST |
|---|---|
| 4:00 PM | 12:00 PM |
| 5:00 PM | 1:00 PM |
| 6:00 PM | 2:00 PM |
| 7:00 PM | 3:00 PM |
| 8:00 PM | 4:00 PM |
| 9:00 PM | 5:00 PM |
| 10:00 PM | 6:00 PM |
| 11:00 PM | 7:00 PM |
Conversion table from UTC to AST for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in AST, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert UTC to AST
Subtract 4 hours from the UTC time to get AST.
Example: 9:00 AM UTC = 5:00 AM AST.
Across midnight: 1:00 AM UTC = 9:00 PM AST (previous day). The date changes, so always check the day as well as the hour.
Time difference between UTC and AST
The time difference between UTC and AST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: AST is 4 hours behind of UTC.
- 8 Mar 2026 – 31 Oct 2026: AST is 3 hours behind of UTC.
- 1 Nov 2026 – 31 Dec 2026: AST is 4 hours behind of UTC.
UTC and AST during daylight saving time
- UTC does not observe daylight saving time; it stays on UTC+0 all year.
- AST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from AST (UTC−4) to ADT (UTC−3).
Best time for a meeting between UTC and AST
UTC and AST share 4 hours of the 9 AM–5 PM working day. Any time between 1:00 PM and 5:00 PM UTC lands between 9:00 AM and 1:00 PM AST, inside working hours for both.
UTC to AST FAQ
What is the time difference between UTC and AST?
Right now AST is 4 hours behind UTC. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM UTC in AST?
9:00 AM UTC is 5:00 AM AST.
What is 12 PM (noon) UTC in AST?
12:00 PM UTC is 8:00 AM AST.
Is AST ahead of or behind UTC?
AST is 4 hours behind UTC, so it is earlier in AST than in UTC.
Does UTC change for daylight saving time?
No. UTC stays on the same offset all year, so conversions never shift for daylight saving time.
Does AST change for daylight saving time?
Yes. AST next changes on 14 Mar 2027, when clocks go forward one hour from AST to ADT.
What is the best time for a meeting between UTC and AST?
UTC and AST share 4 hours of the 9 AM–5 PM working day. Any time between 1:00 PM and 5:00 PM UTC lands between 9:00 AM and 1:00 PM AST, inside working hours for both.
Related conversions
Convert AST to UTC
Convert UTC to other time zones
Convert other time zones to AST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.