What time zone is Portsmouth in?

Portsmouth uses Atlantic Standard Time (AST, UTC−4) all year. Its IANA time zone is America/Dominica.

Does Portsmouth observe daylight saving time?

No. Portsmouth uses AST (UTC−4) all year.

Current Time in Portsmouth, Saint John Parish, Dominica

4:19:45 PM

16:19:45

Thursday, October 22, 2026

AST (Atlantic Standard Time) · UTC−04:00

America/Dominica

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Time zone details

Portsmouth does not observe daylight saving time in 2026

Daylight in Portsmouth

Sunrise5:59 AMSolar noon11:50 AMSunset5:40 PM

Clock change statusNo clock changes are scheduled for Portsmouth in the next 12 monthsView schedule Weather nowLoading current forecast…Forecast details

Location facts

Place

Country: Dominica
Administrative area: Saint John Parish
Place type: City or town
Country currency: East Caribbean Dollar (XCD)

Practical

Country languages: English
Population: 3,633
Elevation: Approximately 1 m (DEM estimate)

Geography

Geographic coordinates: 15° 34' N / 61° 27' W

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Clock changes in Portsmouth

No clock or time-zone designation changes in 2026

Future clock changes, 2027–2030

Clock changes worldwide

Sun & Moon details

Sunrise: 5:59 AM
Solar noon: 11:50 AM
Sunset: 5:40 PM
Daylight duration: 11 hr 42 min48 sec shorter than the previous day

Civil twilight: 5:37 AM – 6:02 PM
Nautical twilight: 5:12 AM – 6:28 PM
Astronomical twilight: 4:47 AM – 6:53 PM

Waxing GibbousMoon illumination86%

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Thursday, October 22, 2026

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Sun

Sunrise: 5:59 AM (east, 101.3°)
Sunset: 5:40 PM (west, 258.5°)
Day length: 11 hr 42 min48 sec shorter than the previous day
Solar noon: 11:50 AM (63.2° altitude)

Civil twilight

Dawn to dusk: 5:37 AM – 6:02 PM

Additional twilight

Nautical dawn to dusk: 5:12 AM – 6:28 PM
Astronomical dawn to dusk: 4:47 AM – 6:53 PM

Moon

Phase: Waxing Gibbous (86% illuminated)
Moonrise: 3:13 PM (east, 94.1°)
Moonset: 2:37 AM (west, 262.7°)
Previous principal phase: First Quarter — Sunday, October 18, 2026 at 12:13 PM
Next principal phase: Full Moon — Monday, October 26, 2026 at 12:12 AM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Thursday, October 22	5:59 AM	5:40 PM	11 hr 42 min	48 sec shorter than the previous day
Friday, October 23	5:59 AM	5:40 PM	11 hr 41 min	48 sec shorter than the previous day
Saturday, October 24	5:59 AM	5:39 PM	11 hr 40 min	48 sec shorter than the previous day
Sunday, October 25	6:00 AM	5:39 PM	11 hr 39 min	47 sec shorter than the previous day
Monday, October 26	6:00 AM	5:38 PM	11 hr 38 min	47 sec shorter than the previous day
Tuesday, October 27	6:00 AM	5:38 PM	11 hr 38 min	47 sec shorter than the previous day
Wednesday, October 28	6:01 AM	5:37 PM	11 hr 37 min	46 sec shorter than the previous day

Weather forecast for Portsmouth

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Plan around Portsmouth

Upcoming national public holidays in Dominica

Tue, Nov 3, 2026Independence Day
Wed, Nov 4, 2026National Day of Community Service
Fri, Dec 25, 2026Christmas Day

Nearby places

Browse places in Dominica

Frequently asked questions

What time zone is Portsmouth in?: Portsmouth uses Atlantic Standard Time (AST, UTC−4) all year. Its IANA time zone is America/Dominica.
When is the next clock change in Portsmouth?: No clock changes are scheduled for Portsmouth in the next 12 months
Does Portsmouth observe daylight saving time?: No. Portsmouth uses AST (UTC−4) all year.
What is the UTC offset of Portsmouth?: Portsmouth is UTC−4 all year