Work in progressTimezonePair is still being built — expect rough edges & missing cities
TimezonePair
Home·Boston·Boston × Ulaanbaatar
Prime meridian·:: UTC·

Boston×Ulaanbaatar

United States · US
Boston
—:—
America/New_York·
DST active
Mongolia · MN
Ulaanbaatar
—:—
Asia/Ulaanbaatar·
No DST

Boston is 12 hours ahead of Ulaanbaatar. 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
12h ahead
Boston vs Ulaanbaatar
02
Overlap
0h
Business hours 09:00 – 17:00
03
UTC offsets
GMT-4 / GMT+8
EDT · Ulaanbaatar
04
Flight
12h 14m
9,978 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
No overlap in working hours
Boston
—:—
0
3
6
9
12
15
18
21
Ulaanbaatar
—:—
12
15
18
21
0
3
6
9
Scrub a meeting time14:00 Boston
Same moment in Ulaanbaatar02:00 Ulaanbaatar
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/boston/to/ulaanbaatar?t=14&a=A&d=2026-05-26&dur=60
14:00 Boston02:00 Ulaanbaatar
Full 24-hour reference
BostonUlaanbaatar
00:00
12:00Ulaanbaatar only
01:00
13:00Ulaanbaatar only
02:00
14:00Ulaanbaatar only
03:00
15:00Ulaanbaatar only
04:00
16:00Ulaanbaatar only
05:00
17:00
06:00
18:00
07:00
19:00
08:00
20:00
09:00Boston only
21:00
10:00Boston only
22:00
11:00Boston only
23:00
12:00Boston only
00:00
13:00Boston only
01:00
14:00Boston only
02:00
15:00Boston only
03:00
16:00Boston only
04:00
17:00
05:00
18:00
06:00
19:00
07:00
20:00
08:00
21:00
09:00Ulaanbaatar only
22:00
10:00Ulaanbaatar only
23:00
11:00Ulaanbaatar only
◊ travel essentials

Crossing the border. Money, language, plugs.

Money changes hands at the border: Boston uses the USD ($) and Ulaanbaatar uses the MNT (₮). Language shifts too — English in Boston, Mongolian in Ulaanbaatar. Cars drive on the right in both, so rentals feel familiar.

Boston
Country
United States
Capital
Washington, D.C.
Currency
United States dollar (USD · $)
Language
English
Calling code
+1
Drives on
Right
Ulaanbaatar
Country
Mongolia
Capital
Ulan Bator
Currency
Mongolian tögrög (MNT · ₮)
Language
Mongolian
Calling code
+976
Drives on
Right
◊ common questions

Quick answers. Before you book the call.

What's the time difference between Boston and Ulaanbaatar?

Boston is 12 hours ahead of Ulaanbaatar. Boston runs on GMT-4 and Ulaanbaatar on GMT+8. 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?

Standard 09:00–17:00 workdays don't intersect. Most teams compromise with one side meeting early (before 09:00) or late (after 17:00).

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 Boston from Ulaanbaatar?

About 9,978 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 12h 14m, 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 Boston and Ulaanbaatar use?

Boston uses the United States dollar (USD, $); Ulaanbaatar uses the Mongolian tögrög (MNT, ₮). 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 Boston from Ulaanbaatar?

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 Boston and Ulaanbaatar?

Boston primarily speaks English; Ulaanbaatar speaks Mongolian. English is widely used in business contexts in major cities of both, but written contracts may need translation.

Do Boston and Ulaanbaatar drive on the same side of the road?

Yes — both drive on the right. Rental cars feel identical between the two.

◊ 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.

BOSTON · America/New_York
GMT-4 · 42.36°, -71.06°

ULAANBAATAR · Asia/Ulaanbaatar
GMT+8 · 47.89°, 106.91°

0h shared · 12h ahead