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TimezonePair
Home·San Juan·San Juan × Nukuʻalofa
Prime meridian·:: UTC·

San Juan×Nukuʻalofa

Puerto Rico · PR
San Juan
—:—
America/Puerto_Rico·
No DST
Tonga · TO
Nukuʻalofa
—:—
Pacific/Tongatapu·
No DST

San Juan is 17 hours ahead of Nukuʻalofa. Scrub a time, meet in the overlap, ship the invite — before the kettle boils.

◊ at a glance

Three numbers. The ones that decide the meeting.

01
Difference
17h ahead
San Juan vs Nukuʻalofa
02
Overlap
1h
Business hours 09:00 – 17:00
03
UTC offsets
GMT-4 / GMT+13
Puerto Rico · Tongatapu
04
Flight
15h 23m
12,655 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
1h shared · 16:00 – 17:00 San Juan
San Juan
—:—
0
3
6
9
12
15
18
21
Nukuʻalofa
—:—
18
21
0
3
6
9
12
15
Scrub a meeting time14:00 San Juan
Same moment in Nukuʻalofa07:00 Nukuʻalofa
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/san-juan/to/nukuʻalofa?t=14&a=A&d=2026-05-26&dur=60
14:00 San Juan07:00 Nukuʻalofa
Full 24-hour reference
San JuanNukuʻalofa
00:00
17:00
01:00
18:00
02:00
19:00
03:00
20:00
04:00
21:00
05:00
22:00
06:00
23:00
07:00
00:00
08:00
01:00
09:00San Juan only
02:00
10:00San Juan only
03:00
11:00San Juan only
04:00
12:00San Juan only
05:00
13:00San Juan only
06:00
14:00San Juan only
07:00
15:00San Juan only
08:00
16:00Both working
09:00
17:00
10:00Nukuʻalofa only
18:00
11:00Nukuʻalofa only
19:00
12:00Nukuʻalofa only
20:00
13:00Nukuʻalofa only
21:00
14:00Nukuʻalofa only
22:00
15:00Nukuʻalofa only
23:00
16:00Nukuʻalofa only
◊ travel essentials

Crossing the border. Money, language, plugs.

Money changes hands at the border: San Juan uses the USD ($) and Nukuʻalofa uses the TOP (T$). Conversations can stay in English, which is official in both countries. Be careful behind the wheel: San Juan drives on the right, Nukuʻalofa on the left.

San Juan
Country
Puerto Rico
Capital
San Juan
Currency
United States dollar (USD · $)
Language
English, Spanish
Calling code
+1
Drives on
Right
Nukuʻalofa
Country
Tonga
Capital
Nuku'alofa
Currency
Tongan paʻanga (TOP · T$)
Language
English, Tongan
Calling code
+676
Drives on
Left
◊ common questions

Quick answers. Before you book the call.

What's the time difference between San Juan and Nukuʻalofa?

San Juan is 17 hours ahead of Nukuʻalofa. San Juan runs on GMT-4 and Nukuʻalofa on GMT+13. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.

When's the best time to schedule a meeting?

There are 1 hour where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.

Does daylight saving time change the difference?

Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.

How far is San Juan from Nukuʻalofa?

About 12,655 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 15h 23m, not counting airport time, winds, or routing around restricted airspace.

Can I send this meeting time as a calendar invite?

Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.

What currency do San Juan and Nukuʻalofa use?

San Juan uses the United States dollar (USD, $); Nukuʻalofa uses the Tongan paʻanga (TOP, T$). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.

How do I call San Juan from Nukuʻalofa?

Dial the international prefix used by your carrier (often 00), then +1, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.

What language is spoken in San Juan and Nukuʻalofa?

Both Puerto Rico and Tonga count English among their official languages, so business meetings often skip translation. San Juan also has Spanish; Nukuʻalofa adds Tongan.

Do San Juan and Nukuʻalofa drive on the same side of the road?

No. Puerto Rico drives on the right, Tonga on the left. If you're renting, expect a learning curve on the first day — especially at roundabouts and when judging the centre of the lane.

◊ keep going

One pair down. 299 cities to go.

Every pair in 300 cities runs the same clocks, the same overlap, the same one-click invite. Pick another.

SAN JUAN · America/Puerto_Rico
GMT-4 · 18.47°, -66.11°

NUKUʻALOFA · Pacific/Tongatapu
GMT+13 · -21.14°, -175.21°

1h shared · 17h ahead