America/Port_of_Spain time zone

America/Port_of_Spain is an IANA time zone used in Trinidad and Tobago. It stays on UTC−4 all year.

America/Port_of_Spain at a glance

UTC offset now	UTC−4
Standard time	UTC−4 (AST)
Abbreviations	AST
Used in	Trinidad and Tobago

Rules of the America/Port_of_Spain time zone

America/Port_of_Spain stays on UTC−4 all year. The tz database records no daylight saving time in this zone since 1970.

Where America/Port_of_Spain is used

America/Port_of_Spain is used in Trinidad and Tobago. These are the largest cities in our list that follow it.

America/Port_of_Spain 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/Port_of_Spain today. Their clock-change rules may differ.

Using America/Port_of_Spain in software

Use the zone name America/Port_of_Spain 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/Port_of_Spain:

// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'America/Port_of_Spain', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('America/Port_of_Spain'))
// PHP
(new DateTime('now', new DateTimeZone('America/Port_of_Spain')))->format('c');
# Shell
TZ=America/Port_of_Spain date

Plan around the time in America/Port_of_Spain

Convert a time to or from America/Port_of_Spain: pick a date and time and see it in every city on your list.
Add Chaguanas to your world clock to keep it next to your own time.
Find a meeting time that falls inside office hours in America/Port_of_Spain 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/Port_of_Spain?

UTC−4, all year.

What abbreviation does America/Port_of_Spain use?

AST. Abbreviations are not unique, so use the zone name America/Port_of_Spain in software.

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.