San Juan, Puerto Rico to NST Time Converter

Updating current time…
San Juan
Puerto RicoAST
UTC−4
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NST
Newfoundland Standard Time
UTC−3:30
30m ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am08:00 AST (UTC-4), Nov 4, 2026 = 8:30 am08:30 NST (UTC-3:30), Nov 4, 2026

San Juan is 30 minutes behind NST.

How the time difference changes

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

For most of the year, working hours of 9:00 am to 6:00 pm in San Juan, Puerto Rico correspond to 10:30 am to 7:30 pm in NDT. At other times of the year, working hours of 9:00 am to 6:00 pm in San Juan, Puerto Rico correspond to 9:30 am to 6:30 pm in NST.For most of the year, working hours of 09:00 to 18:00 in San Juan, Puerto Rico correspond to 10:30 to 19:30 in NDT. At other times of the year, working hours of 09:00 to 18:00 in San Juan, Puerto Rico correspond to 09:30 to 18:30 in NST.

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

Time Difference

AST (Atlantic Standard Time) is 30 minutes behind Newfoundland Standard Time.
8:00 am08:00 in San Juan, Puerto Rico is 8:30 am08:30 in NST

San Juan to NST call time
Best time for a conference call or a meeting is between 9am-5:30pm09:00-17:30 in San Juan which corresponds to 9:30am-6pm09:30-18:00 in NST

8:00 am08:00 AST (Atlantic Standard Time) (San Juan, Puerto Rico). Offset UTC -4:00 hours
8:30 am08:30 Newfoundland Standard Time (NST). Offset UTC -3:30 hours

8:00 am08:00 San Juan, Puerto Rico / 8:30 am08:30 NST

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
San Juan, Puerto RicoNST
12:30am
1:30am
2:30am
3:30am
4:30am
5:30am
6:30am
7:30am
8:30am
9:30am
10:30am
11:30am
12:30pm
1:30pm
2:30pm
3:30pm
4:30pm
5:30pm
6:30pm
7:30pm
8:30pm
9:30pm
10:30pm
11:30pm
00:30
01:30
02:30
03:30
04:30
05:30
06:30
07:30
08:30
09:30
10:30
11:30
12:30
13:30
14:30
15:30
16:30
17:30
18:30
19:30
20:30
21:30
22:30
23:30

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
International Dialing Code
+1 787 and +1 939
More About San Juan
San Juan local time and city facts

Newfoundland Standard Time

Offset: NST is 3 hours and 30 minutes behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada

Principal Cities: The largest city in the NST 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: HNT - Heure Normale de Terre-Neuve

Map of the areas on Newfoundland Standard Time (NST)
NST part of the year

Today all shaded areas are on NST.

Open the world time zone map© OpenStreetMap

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Newfoundland Daylight Time (NDT).

123456789101112Start: Newfoundland Standard Time (NST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

123456789101112End: Newfoundland Standard Time (NST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

See Canada daylight saving time and upcoming clock changes worldwide.

NST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0330 - basic
  • -03:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0330 - sign character (-) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates an offset of three hours and thirty minutes to the west of the zero meridian.
IANA/Olson: Reflects NST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/St_Johns
  • Canada/Newfoundland