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TimezonePair
Home·Houston·Houston × Nukuʻalofa
Prime meridian·:: UTC·

Houston×Nukuʻalofa

United States · US
Houston
—:—
America/Chicago·
DST active
Tonga · TO
Nukuʻalofa
—:—
Pacific/Tongatapu·
No DST

Houston is 18 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
18h ahead
Houston vs Nukuʻalofa
02
Overlap
2h
Business hours 09:00 – 17:00
03
UTC offsets
GMT-5 / GMT+13
CDT · Tongatapu
04
Flight
12h 33m
10,238 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
2h shared · 15:00 – 17:00 Houston
Houston
—:—
0
3
6
9
12
15
18
21
Nukuʻalofa
—:—
18
21
0
3
6
9
12
15
Scrub a meeting time14:00 Houston
Same moment in Nukuʻalofa08:00 Nukuʻalofa
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/houston/to/nukuʻalofa?t=14&a=A&d=2026-04-27&dur=60
14:00 Houston08:00 Nukuʻalofa
Full 24-hour reference
HoustonNukuʻalofa
00:00
18:00
01:00
19:00
02:00
20:00
03:00
21:00
04:00
22:00
05:00
23:00
06:00
00:00
07:00
01:00
08:00
02:00
09:00Houston only
03:00
10:00Houston only
04:00
11:00Houston only
05:00
12:00Houston only
06:00
13:00Houston only
07:00
14:00Houston only
08:00
15:00Both working
09:00
16:00Both working
10:00
17:00
11:00Nukuʻalofa only
18:00
12:00Nukuʻalofa only
19:00
13:00Nukuʻalofa only
20:00
14:00Nukuʻalofa only
21:00
15:00Nukuʻalofa only
22:00
16:00Nukuʻalofa only
23:00
17:00
◊ common questions

Quick answers. Before you book the call.

What's the time difference between Houston and Nukuʻalofa?

Houston is 18 hours ahead of Nukuʻalofa. Houston runs on GMT-5 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 2 hours 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 Houston from Nukuʻalofa?

About 10,238 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 12h 33m, 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.

◊ 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.

HOUSTON · America/Chicago
GMT-5 · 29.76°, -95.37°

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

2h shared · 18h ahead