America/Guyana is an IANA time zone used in Guyana. It stays on UTC−4 all year.
America/Guyana at a glance
| UTC offset now | UTC−4 |
|---|---|
| Standard time | UTC−4 |
| Used in | Guyana |
How America/Guyana keeps time
America/Guyana stays on UTC−4 all year. The tz database records no daylight saving time in this zone since 1970.
Recent and upcoming changes in America/Guyana
| Date | Change | New offset |
|---|---|---|
| Friday, August 1, 1975 | Standard offset changes from UTC−3:45 to UTC−3 | UTC−3 |
| Sunday, March 29, 1992 | Clocks go back 1 hour for good: 1:00 AM becomes 12:00 AM | UTC−4 |
The base offset of this zone changed in 1992, from UTC−3 to UTC−4. Old timestamps should be converted with the rule that applied at the time.
Countries and cities on America/Guyana
America/Guyana is used in Guyana. These are the largest cities in our list that follow it.
America/Guyana compared with other time zones
Differences change during the year when one side moves to or from daylight saving time, so the table shows January and July separately.
| City | Time now | Difference now | In January | In July |
|---|---|---|---|---|
| New York (United States) | --:-- | 1 h behind | 1 h behind | Same time |
| Los Angeles (United States) | --:-- | 4 h behind | 4 h behind | 3 h behind |
| London (United Kingdom) | --:-- | 4 h ahead | 4 h ahead | 5 h ahead |
| Paris (France) | --:-- | 5 h ahead | 5 h ahead | 6 h ahead |
| Dubai (United Arab Emirates) | --:-- | 8 h ahead | 8 h ahead | 8 h ahead |
| Mumbai (India) | --:-- | 9 h 30 min ahead | 9 h 30 min ahead | 9 h 30 min ahead |
| Singapore | --:-- | 12 h ahead | 12 h ahead | 12 h ahead |
| Tokyo (Japan) | --:-- | 13 h ahead | 13 h ahead | 13 h ahead |
| Sydney (Australia) | --:-- | 15 h ahead | 15 h ahead | 14 h ahead |
| UTC | --:-- | 4 h ahead | 4 h ahead | 4 h ahead |
Other zones on UTC−4 right now
These IANA zones show the same time as America/Guyana today. Their clock-change rules may differ.
- America/Anguilla
- America/Antigua
- America/Aruba
- America/Barbados
- America/Boa_Vista
- America/Campo_Grande
- America/Caracas
- America/Cuiaba
- America/Curacao
- America/Dominica
- America/Glace_Bay
- America/Grenada
Using America/Guyana in software
Use the zone name America/Guyana rather than an abbreviation or a fixed offset. Abbreviations can mean several zones, and offsets ignore future clock changes.
Show the current time in America/Guyana:
// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'America/Guyana', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('America/Guyana'))
// PHP
(new DateTime('now', new DateTimeZone('America/Guyana')))->format('c');
# Shell
TZ=America/Guyana datePlan around the time in America/Guyana
- Convert a time to or from America/Guyana: pick a date and time and see it in every city on your list.
- Add Georgetown to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in America/Guyana and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What is the UTC offset of America/Guyana?
UTC−4, all year.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.