When US clocks fall back on November 1, the Philippines stays put, so Manila becomes 16 hours ahead of Los Angeles and 13 ahead of New York (15 and 12 until then).
A 6pm call from LA reaches 10am the next day in Manila.
Notes
Calling notes
Short, sourced notes on calling phones in other countries: the digits each one needs, rule changes that make calls fail, and when calls from abroad get flagged or blocked. Each one links to the full guide.
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US clocks fall back on Sunday, November 1. Most of Mexico doesn't change: it ended daylight saving in 2022.
So from Chicago, Mexico City goes from 1 hour behind to the same time. From Los Angeles, it goes from 1 hour ahead to 2.
British Columbia and Alberta stop changing their clocks: when the US falls back on Sunday, November 1, they stay where they are.
From then on, Vancouver is 1 hour ahead of Seattle and Calgary 1 hour ahead of Denver. Dial 1 and the 10 digits, no 011.
El Salvador numbers have 8 digits, no area code and no 0 to drop. The first digit tells you the line: 2 is a landline, 6 or 7 a mobile.
From the US, dial 011 503 and the 8 digits.
A Nigerian mobile written 0803 123 4567 is dialed 011 234 803 123 4567 from the US. Keep the 0 and the call fails.
Mobiles have 10 digits after the 234.
A Pakistani mobile written 0300 1234567 is dialed 011 92 300 1234567 from the US. The 0 is only for calls inside Pakistan.
Quick check: after the 92 there are always 10 digits.
Korean hotlines like 1588, 1577 or 1544 numbers can't be dialed from outside Korea. Ask for the company's regular +82 number for callers abroad.
Mobiles are easy: 010 plus 8 digits, so from the US dial 011 82 10 and the 8 digits.
Morocco now keeps UTC+0 all year. On September 20 it left the UTC+1 clock it had used since 2018, so the clocks no longer change around Ramadan either.
From New York, Casablanca is 4 hours ahead until US clocks fall back on November 1, then 5.
In Brazil, long-distance numbers are dialed with a 0 and a carrier code first, like 0 15 11 98765 4321. From abroad, both go.
From the US: 011 55 11 98765 4321. Every mobile has 9 digits after the area code, starting with 9.
Haiti isn't a +1 country like Jamaica or the Dominican Republic. Its code is +509, and every number has 8 digits, with no 0 to drop.
From the US, dial 011 509 and the 8 digits. A Haitian contact saved with +1 is wrong.
Calling a Manila landline from an old business card? Since October 2019, Metro Manila landlines have 8 digits, not 7, starting with a carrier digit: 8 for PLDT, 7 for Globe.
From the US: 011 63 2 and the 8 digits. A 7-digit one won't connect.
Got an Indian mobile written with a 0 in front, like 098...? That 0 is only for calls inside India, where landlines have had to dial it before mobiles since 2021.
From the US, drop it: 011 91 and the 10 digits.
Call to Singapore not ringing at all? More than 1.3 million Singapore subscribers block overseas calls, a step the authorities encourage against scams.
Nothing is wrong on your end: message them to lift the block, then call again.
Dutch 14 numbers, like 14 020 for Amsterdam's city hall, don't work from abroad, and neither do 0800 and 0900 lines.
Calling from the US? Use the regular +31 number the organization lists for callers abroad.
Vietnamese mobile saved before late 2018 with 11 digits (01x prefix)? It won't connect as saved. Vietnam cut every 11-digit mobile to 10 digits, swapping 01x for 03x, 05x, 07x or 08x.
Get the new number, then dial 011 84 and the 9 digits after the 0.
Hong Kong mobiles show a + in front of every call from abroad, and since 2023 networks warn "Call is from outside Hong Kong. Beware of deception." before an overseas call that shows a +852 number.
Calling family there? Text first so they pick up.
Cameroon number with only 8 digits after +237? It was saved before November 2014, when Cameroon put a 6 in front of every mobile and a 2 in front of every landline.
Add the missing digit, or the call won't connect.
Poland has no 0 to drop. Since 2009 every Polish number is 9 digits, always dialed in full. A contact saved as +48 022 ... has a stray 0: delete it.
New mobiles can start with 45. They are real numbers, even if an old app calls them invalid.
Swedish 020 freephone numbers only work inside Sweden, and some carriers abroad refuse 0771 numbers.
To reach a Swedish bank or agency from the US, find its regular number, like a Stockholm 08 line, and dial 011 46 8 and the rest.
A Kenyan number that starts with 01 is a mobile, not a landline. Kenya ran out of 07 numbers in 2019 and opened an 01 series.
0112 345 678 becomes +254 112 345 678 from the US: drop the 0, as with any Kenyan number.
Chilean number not connecting? Count the digits after +56: nine is current, eight means it was saved before a renumbering.
Santiago landlines gained a 2 in 2012 (+56 2 2...) and mobiles gained a 9 in 2016 (+56 9 and 8 digits).
Colombian landline saved as +57 1 and 7 digits? That short format was switched off in February 2022. Every landline now has 10 digits: Bogotá's 1 became 601 and Medellín's 4 became 604.
From the US, a Bogotá line is 011 57 601 and the 7-digit number.
Since April 2026, government offices and schools in Nepal close on both Saturday and Sunday, not just Saturday.
Calling an office from the US? Plan around the two-day weekend (lawmakers have asked for a review, so check first).
Switzerland now checks calls from abroad that show a Swiss number (landlines since January 2026, mobiles since July 2026). If the call can't be verified, it may arrive with no caller ID or not at all.
Calling from the US? Show your real US number.
Saudi 800 toll-free numbers are meant for callers inside the kingdom and are not a dependable way in from the US. The 9200 unified numbers are built to be called from any country.
Dial 011 966 9200 and the rest of the number.
Calling Belgium with an app that shows a Belgian caller ID? Calls from abroad that display a Belgian number have been blocked since late 2024.
Calls that show your real foreign number go through.
+44 (0)20 7946 0958: the (0) is only for calls inside the UK. From the US, dial 011 44 20 7946 0958.
UK 0800 numbers usually can't be reached from abroad, so look for a company's geographic 020 or 0161 number instead.
Calling an Argentine cell from the US: put a 9 right after the country code and drop the local 15.
A Buenos Aires mobile written 11 15 1234 5678 is dialed +54 9 11 1234 5678. Landlines take no 9.
Calling Jamaica, the Dominican Republic or Canada from the US? Skip the 011. They share the +1 calling code, so you dial 1 and the ten digits, just like a US long-distance number.
Italy breaks the drop-the-zero rule: landlines keep their leading 0 when you call from abroad.
Rome 06 1234 5678 becomes 011 39 06 1234 5678 from the US. Mobiles start with 3 and have no 0 to drop.
Calling family in Thailand? Under rules from August 2025, Thai carriers put +697 or +698 in front of calls from abroad, and people there are told to reject such calls unless they know someone overseas.
Message them on LINE first.
Calling a Mexican cell from the US? If your contact is saved as +52 1 ..., delete the 1. Mexico dropped it in 2020, and that stray 1 is the most common mistake when calling Mexican mobiles.
Dial 011 52 plus the 10 digits, or +52 from a mobile.
We're InternationalCall.co. We post short, accurate notes on calling phones abroad: the digits each country needs, rule changes that make calls fail, and when calls from abroad get flagged or blocked.