Current time in Mong Cai, Vietnam right now

It is 9:47 am in Mong Cai, Vietnam 🇻🇳 right now, on Sunday, September 27, 2026. The city keeps Asia/Bangkok, which is UTC+7 at UTC+7, so Mong Cai is 7 hours ahead of UTC, where it is 2:47 am. The sun rose in Mong Cai at 5:38 am and sets at 5:40 pm, which is 12 hours 2 minutes of daylight.

What time is it in Mong Cai right now?

The time in Mong Cai, Vietnam is 9:47 am, 09:47 on a 24 hour clock, on Sunday September 27, 2026. The reading above ticks from your own device against the Asia/Bangkok rules, so it stays right through a clock change rather than drifting an hour out twice a year.

Mong Cai sits at 21.52 degrees north and 107.97 degrees east, inside the tropics, north of the equator and 2,393 km from the equator. Its clock is set to a zone whose nominal meridian is 105.0 degrees east, and the city itself is 3.0 degrees east of that line. Those 3.0 degrees are worth 11 minutes 52 seconds of sun time, which is most of why solar noon here lands at 11:39 am rather than on the stroke of twelve.

Mong Cai time zone and UTC offset

The IANA zone for Mong Cai, Vietnam is Asia/Bangkok. Right now it is running at UTC+7 and the abbreviation in force is UTC+7. Mong Cai does not change its clocks at any point in the year. The offset stays at UTC+7 in January and in July alike, so no conversion involving Mong Cai ever needs a seasonal footnote.

Daylight hours in Mong Cai today

The sun rose in Mong Cai at 5:38 am and sets at 5:40 pm, which is 12 hours 2 minutes of daylight. Solar noon, the instant the sun stands at its highest over Mong Cai, is at 11:39 am, which is 21 minutes before clock noon. The sun's declination today is -1.63 degrees, so at this latitude it reaches about 66.8 degrees above the horizon at its highest, to the south.

The full month by month picture for this city, the extremes of the year and every twilight band are on the sunrise and sunset page for Mong Cai, which works from the same coordinates.

Where Mong Cai is on the map

The marker sits at the coordinates this whole page is computed from, so the sun times, the distances and the solar noon above all belong to this exact point rather than to the wider metropolitan area.

Time difference between Mong Cai and major cities

Every row below is computed at this instant, so daylight saving on either side is already in it. A positive figure means that city's clock reads later than Mong Cai.

Best time to call Mong Cai

Treating a working day as 9am to 6pm on both sides, this is the window the two cities genuinely share. Some of these pairs have no shared working hour at all, which is worth knowing before a meeting is proposed.

Other cities in Vietnam

We cover 142 cities in Vietnam. These are the ones nearest to Mong Cai, with the time on their clocks right now.

Cities on Asia/Bangkok time

105 of our cities keep Asia/Bangkok, so every one of them reads 9:47 am at this moment and changes its clocks on the same night as Mong Cai. Nearest first:

Moon phase over Mong Cai tonight

The moon is a waning gibbous tonight, 16.0 days into its cycle and about 98% lit. The next full moon falls on October 26, 2026 at 11:11 am Bangkok time, and the next new moon on October 10, 2026 at 10:49 pm. Both are the same instant everywhere on Earth, printed here on the Mong Cai clock, which is why the calendar date can differ from the one a reader further east or west sees.

When the clocks change in Mong Cai

There is no clock change scheduled in Asia/Bangkok within the next 400 days, so Mong Cai stays at UTC+7 for the whole of that stretch.

That makes Mong Cai an easy city to schedule against: a meeting fixed at a given hour here holds its relationship to UTC all year, and only the other end of the call can move.

How far Mong Cai is from other cities

Great-circle distance, computed from the coordinates rather than road mileage. The nearest city we cover to Mong Cai is Dongxing, China at 3 km, and the furthest is Iquique, Chile at 19,771 km, which is 99% of the way to being exactly opposite.

The antipode of Mong Cai

Dig straight through the centre of the Earth from Mong Cai, Vietnam and you come out at 21.52 degrees south, 72.03 degrees west. That point is near Iquique, Chile. The nearest city in our catalogue to it is Iquique, Chile, 244 km away from the antipode itself, where the clock currently reads 11:47 pm on Saturday.

The antipode is worked out by flipping the latitude across the equator and swinging the longitude a half turn: 21.52 degrees north becomes 21.52 degrees south, and 107.97 degrees east becomes 72.03 degrees west. Two thirds of the planet is ocean and the land is unevenly spread, so most antipodes are open water: Mong Cai is one of the exceptions, with dry land on the far side. The local time at the antipode runs close to UTC-5, roughly twelve hours from Mong Cai, because a half turn of longitude is a half turn of the day.

Sunrise and sunset in Mong Cai

Today the sun rises in Mong Cai at 5:38 am and sets at 5:40 pm, giving 12 hours 2 minutes of daylight. The dedicated page for this city carries the month by month table, the longest and shortest days of 2026, the golden and blue hour bands at both ends of the day, and all three twilight stages: sunrise and sunset times in Mong Cai.

Sun and moon in Mong Cai today

The sun is up in Mong Cai for 12 hours 2 minutes today, from 5:38 am to 5:40 pm. The moon sets in Mong Cai at 5:55 am and comes up again at 5:55 pm. The next phase is the last quarter on October 3, 2026. The moon is full, or as near to it as makes no difference, and the whole of the face turned towards us is lit.

Twilight is graded by how far the sun has dropped below the horizon. Civil twilight ends six degrees down, which is roughly the point at which you need a light to read outside. Nautical twilight ends at twelve degrees, when the horizon at sea stops being usable for a sextant sight. Astronomical twilight ends at eighteen degrees, which is full darkness for an observer.

Golden hour is the stretch with the sun between six degrees above the horizon and four below it, and blue hour runs from there down to six degrees below. Neither is literally an hour: each is as long as the sun takes to cross those few degrees, which is minutes near the equator and can be most of the evening at high latitude.

Moonrise and moonset are computed to the moment the moon's upper edge touches a flat horizon, allowing for refraction, for the size of the disc and for the moon's parallax, which together put the centre of the moon at 0.125 degrees above the horizon at the instant it rises. That is a different horizon from the one sunrise uses, and it is why a moonrise time cannot be worked out with a sunrise formula.

Prayer times in Mong Cai

Seven days from September 27, 2026, computed for Mong Cai, Vietnam at 21.52 degrees north, 107.97 degrees east, on the clock of Asia/Bangkok. The method is Muslim World League (Muslim World League, Mecca), which puts Fajr at 18.0 degrees below the horizon and Isha at 17.0 degrees. Asr uses the Standard shadow ratio of 1, which is the Shafi'i, Maliki and Hanbali position.

Dhuhr is solar noon at Mong Cai, Vietnam, the instant the Sun crosses the local meridian, so it moves with longitude inside the time zone and with the equation of time through the year rather than sitting at a fixed clock reading. Sunrise and Maghrib are the standard refracted horizon, the same 0.833 degrees every almanac uses. Every figure above is computed from the Sun's position for this exact coordinate; none of it is copied from a table.

Different methods disagree, and that is expected rather than an error. Fajr under ISNA at 15 degrees comes later than Fajr under Egyptian General Authority of Survey at 19.5 degrees, by twenty minutes or more depending on latitude and season. Follow whichever your local mosque follows.

Qibla direction from Mong Cai

From Mong Cai, Vietnam the qibla is 283.8 degrees on a true compass, which is west-northwest, or 13.8 degrees south of due west. The Kaaba is 6,988 km away, 4,342 miles, measured over the surface of the Earth.

That figure is the initial bearing of the great circle from Mong Cai, Vietnam to 21.4225 degrees north, 39.8262 degrees east, which is the Kaaba inside Masjid al-Haram.

The bearing is measured from true north, not magnetic north. A magnetic compass points at the magnetic pole, and the difference between the two can be anything from nothing to more than twenty degrees depending where you are, so check your compass reading against magnetic declination for Mong Cai, Vietnam before you use it. A phone compass set to true north, or the shadow of a vertical stick at local solar noon, avoids the problem entirely.

Mong Cai time now: common questions

What time is it in Mong Cai, Vietnam right now?

9:47 am on Sunday September 27, 2026. Mong Cai runs on UTC+7, UTC+7.

What time zone is Mong Cai in?

Asia/Bangkok, currently UTC+7 at UTC+7. 105 of the cities on this site keep that zone.

What is the UTC offset for Mong Cai?

UTC+7 at this instant. It is UTC+7 all year round, with no seasonal change.

Does Mong Cai observe daylight saving time?

No. Mong Cai stays on UTC+7 for the whole year.

How many hours ahead or behind is Mong Cai of New York?

Mong Cai is 11 hours ahead of New York, where it is 10:47 pm right now.

What time does the sun set in Mong Cai today?

5:40 pm, after a sunrise at 5:38 am and 12 hours 2 minutes of daylight.

What is on the exact opposite side of the Earth from Mong Cai?

21.52 degrees south, 72.03 degrees west, near Iquique, Chile.

When is the best time to call Mong Cai from London?

Between 3:00 pm and 6:00 pm in Mong Cai, which is 9:00 am to 12:00 pm in London.

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