Updating current time…
NDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Puerto RicoAST
UTC−4
1h 30m behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

9:30 am09:30 NDT (UTC-2:30), Oct 15, 2026 = 8:00 am08:00 AST (UTC-4), Oct 15, 2026

NDT is 1 hour and 30 minutes ahead of San Juan.

How the time difference changes

For most of the year, NDT is 1 hour and 30 minutes ahead of San Juan, Puerto Rico. From Nov 1, 2026 to Mar 14, 2027, NST is 30 minutes ahead of San Juan, Puerto Rico.

For most of the year, working hours of 9:00 am to 6:00 pm in NDT correspond to 7:30 am to 4:30 pm in San Juan, Puerto Rico. At other times of the year, working hours of 9:00 am to 6:00 pm in NST correspond to 8:30 am to 5:30 pm in San Juan, Puerto Rico.For most of the year, working hours of 09:00 to 18:00 in NDT correspond to 07:30 to 16:30 in San Juan, Puerto Rico. At other times of the year, working hours of 09:00 to 18:00 in NST correspond to 08:30 to 17:30 in San Juan, Puerto Rico.

Compare NDT time with San Juan time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Newfoundland Daylight Time is 1 hour and 30 minutes ahead of AST (Atlantic Standard Time).
9:30 am09:30 in NDT is 8:00 am08:00 in San Juan, Puerto Rico

NDT to San Juan call time
Best time for a conference call or a meeting is between 10:30am-6pm10:30-18:00 in NDT which corresponds to 9am-4:30pm09:00-16:30 in San Juan

9:30 am09:30 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours
8:00 am08:00 AST (Atlantic Standard Time) (San Juan, Puerto Rico). Offset UTC -4:00 hours

9:30 am09:30 NDT / 8:00 am08:00 San Juan, Puerto Rico

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Hourly time comparison
NDTSan Juan, Puerto Rico
10:30pm previous day
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22:30 previous day
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Newfoundland Daylight Time

Offset: NDT is 2 hours and 30 minutes behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada

Principal Cities: The largest city in the NDT time zone is St. John's in Canada, with about 110,525 people. Other major cities in this time zone include Corner Brook, Grand Falls-Windsor, Gander, Clarenville.

French: HAT - Heure Avancée de Terre-Neuve

Map of the areas on Newfoundland Daylight Time (NDT)
NDT part of the year

Today all shaded areas are on NDT.

Daylight Saving: Newfoundland Daylight Time (NDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Newfoundland Standard Time (NST).

123456789101112Start: Newfoundland Daylight Time (NDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Newfoundland Daylight Time (NDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See upcoming clock changes worldwide.

NDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0230 - basic
  • -02:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0230 - sign character (-) followed by a four digit time providing hours (02) and minutes (30) of the offset. Indicates an offset of two hours and thirty minutes to the west of the zero meridian.
IANA/Olson: Reflects NDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/St_Johns
  • Canada/Newfoundland

San Juan Time Zone and Facts

Time Zone

Abbreviation / Offset
AST – Atlantic Standard Time, UTC-4 (no daylight saving time)

San Juan Facts

Country
Puerto Rico
Alternative Names
Caparra, Ciudad de Puerto Rico, Portorico, Prico, Puerto Rico, SJU, Saint Iuan, Saint John de Porto Rico, Sainte Jean de Porto-rico, San Chouan, San Chuanas, San Huan, San Ian de Porto Rico, San Ioanni, San Jean de Portorico, San Juan, San Juan Batista de Puerto Rico, San Juan Bautistade de Puerto Rico, San Juan de Puerto Rico, San Khuan, San Xoan, San Xoán, San Xuan, San-Juano, San-Khuan, Sanhuana, The City of Saint John, Ville de Porto-Rico, Ville de Sainte Jean de Porto Rico, can van, saenhwan, san hwn, san khwan, san-khuani, sana hu'ana, sana huraana, sanfuan, sanhuan, sheng hu an, Σαν Χουάν, Сан Хуан, Сан-Хуан, Սան Խուան, סן חואן, سان خوآن, سان خوان, सान हुआन, সান হুৱান, ਸਾਨ ਹੁਆਨ, சான் வான், ซานฮวน, სან-ხუანი, サンフアン, 圣胡安, 산후안, 샌환
Population
418,140
Currency
Dollar (USD)
Geographic Coordinates
18° 27' N Latitude / 66° 06' W Longitude