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2026 Calendar
with week numbers & holidays.

What week is it today?

2026 calendar with ISO week numbers — USA

January 2026United States

January 2026 calendar for United States with ISO week numbers and holidays
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Federal holidayRegionalSubstitute day offReligious / culturalObservanceClock changeISO week

United States holidays 2026 — dates & week numbers

Clock changes 2026: Clocks go forward 1 hour at 2:00 a.m. on Sunday, March 8, 2026 and back 1 hour at 2:00 a.m. on Sunday, November 1, 2026 (not in Hawaii and most of Arizona).

United States holidays and observances 2026
NameDateWeekdayWeekDay offTypeWhere
New Year's DayFirst day of the Gregorian calendar year.Thursday1Same dayFederal holidayNationwide
Martin Luther King Jr. DayThird Monday of January, honoring civil rights leader Martin Luther King Jr.Monday4Same dayFederal holidayNationwide
Groundhog DayPunxsutawney Phil predicts whether spring comes early.Monday6—ObservanceNationwide
Valentine's DayCelebration of love and affection.Saturday7—ObservanceNationwide
Presidents' DayWashington's Birthday, the third Monday of February.Monday8Same dayFederal holidayNationwide
Lunar New YearYear of the Horse begins.Tuesday8—Religious / culturalNationwide
Mardi GrasFat Tuesday, the day before Ash Wednesday; a public holiday in parts of Louisiana.Tuesday8—ObservanceNationwide
Ash WednesdayStart of Lent in Western Christianity.Wednesday8—Religious / culturalNationwide
Ramadan beginsDate as announced in Saudi Arabia; some communities marked it one day later.Wednesday8—Religious / culturalNationwide
Daylight saving time startsClocks go forward 1 hour at 2:00 a.m. local time (spring forward).Sunday10—Clock changeNationwide
St. Patrick's DayCelebration of Irish heritage with parades nationwide.Tuesday12—ObservanceNationwide
Eid al-FitrEnd of Ramadan. Date as announced in Saudi Arabia; some communities marked it one day later.Friday12—Religious / culturalNationwide
April Fools' DayDay of pranks and hoaxes.Wednesday14—ObservanceNationwide
Passover beginsFirst day of Passover (begins at sundown the evening before).Thursday14—Religious / culturalNationwide
Good FridayCommemorates the crucifixion of Jesus. Public holiday in some states, stock markets closed.Friday14—Religious / culturalNationwide
Easter SundayChristian holiday celebrating the resurrection of Jesus.Sunday14—Religious / culturalNationwide
Tax DayUsual deadline for filing federal income tax returns.Wednesday16—ObservanceNationwide
Earth DayGlobal day of environmental awareness.Wednesday17—ObservanceNationwide
Cinco de MayoCelebration of Mexican-American culture.Tuesday19—ObservanceNationwide
Mother's DaySecond Sunday of May.Sunday19—ObservanceNationwide
Memorial DayLast Monday of May, honoring military personnel who died in service.Monday22Same dayFederal holidayNationwide
Eid al-AdhaFestival of Sacrifice. Date as announced in Saudi Arabia; some communities marked it one day later.Wednesday22—Religious / culturalNationwide
Flag DayCommemorates the adoption of the US flag in 1777.Sunday24—ObservanceNationwide
JuneteenthNational Independence Day marking the end of slavery in the United States.Friday25Same dayFederal holidayNationwide
Father's DayThird Sunday of June.Sunday25—ObservanceNationwide
Independence DayCelebrates the Declaration of Independence of 1776.Saturday27Federal holidayNationwide
Labor DayFirst Monday of September, honoring the American labor movement.Monday37Same dayFederal holidayNationwide
Patriot DayRemembrance of the September 11, 2001 attacks.Friday37—ObservanceNationwide
Rosh HashanahJewish New Year 5787 (begins at sundown the evening before).Saturday37—Religious / culturalNationwide
Grandparents DayFirst Sunday after Labor Day.Sunday37—ObservanceNationwide
Constitution DayMarks the signing of the US Constitution in 1787.Thursday38—ObservanceNationwide
Yom KippurDay of Atonement (begins at sundown the evening before).Monday39—Religious / culturalNationwide
Columbus Day / Indigenous Peoples' DaySecond Monday of October. Many states and cities observe it as Indigenous Peoples' Day.Monday42Same dayFederal holidayNationwide
HalloweenCostumes and trick-or-treating.Saturday44—ObservanceNationwide
Daylight saving time endsClocks go back 1 hour at 2:00 a.m. local time (fall back).Sunday44—Clock changeNationwide
DiwaliHindu festival of lights.Sunday45—Religious / culturalNationwide
Veterans DayHonors military veterans of the United States Armed Forces.Wednesday46Same dayFederal holidayNationwide
Thanksgiving DayFourth Thursday of November.Thursday48Same dayFederal holidayNationwide
Black FridayDay after Thanksgiving; start of the holiday shopping season. Many state employees get the day off.Friday48—ObservanceNationwide
Cyber MondayOnline shopping day after Thanksgiving weekend.Monday49—ObservanceNationwide
Hanukkah beginsFirst day of Hanukkah; first candle lit at sundown on December 4.Saturday49—Religious / culturalNationwide
Christmas EveEvening before Christmas Day.Thursday52—ObservanceNationwide
Christmas DayChristian holiday celebrating the birth of Jesus.Friday52Same dayFederal holidayNationwide
Kwanzaa beginsWeek-long celebration of African-American culture (Dec 26 – Jan 1).Saturday52—ObservanceNationwide
New Year's EveLast day of the year.Thursday53—ObservanceNationwide

Islamic, Hindu, Jewish and Chinese calendar dates follow the lunar calendar and may shift by a day with moon sighting.

2026 week numbers and dates

Find the start and end dates for every ISO week in 2026. Each week runs from Monday to Sunday, including every date between the two. Week 1 is the week containing the year's first Thursday.

Week 1 of 2026 starts on December 29, 2025, so January 1 already belongs to week 1. 2026 has 53 ISO weeks, and week 53 runs from December 28, 2026 to January 3, 2027.

ISO week numbers 2026: Monday start dates and Sunday end dates
ISO weekMondaySunday
Week 12026
Week 22026
Week 32026
Week 42026
Week 52026
Week 62026
Week 72026
Week 82026
Week 92026
Week 102026
Week 112026
Week 122026
Week 132026
Week 142026
Week 152026
Week 162026
Week 172026
Week 182026
Week 192026
Week 202026
Week 212026
Week 222026
Week 232026
Week 242026
Week 252026
Week 262026
Week 272026
Week 282026
Week 292026
Week 302026
Week 312026
Week 322026
Week 332026
Week 342026
Week 352026
Week 362026
Week 372026
Week 382026
Week 392026
Week 402026
Week 412026
Week 422026
Week 432026
Week 442026
Week 452026
Week 462026
Week 472026
Week 482026
Week 492026
Week 502026
Week 512026
Week 522026
Week 532026

Special days: dates and countdowns

For developers & AI agents

Time data your AI can trust.

Every calendar on WorldTimePortal is available as clean JSON and Markdown — so assistants and apps get the exact date, every time. An MCP server is on the way.

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2026 week numbers & calendar facts

When is Thanksgiving 2026?
Thanksgiving 2026 is on Thursday, November 26, 2026 (ISO week 48).
How many federal holidays are there in the US in 2026?
There are 11 US federal holidays in 2026. Only one falls on a weekend: Independence Day is Saturday, July 4, so the federal day off is Friday, July 3.
When is Easter 2026?
Easter Sunday 2026 is on Sunday, April 5, 2026 (ISO week 14). Good Friday is April 3 and Easter Monday is April 6.
When is Memorial Day 2026?
Memorial Day 2026 is on Monday, May 25, 2026, the last Monday of May (ISO week 22).
When do the clocks change in 2026?
USA and Canada: forward Sunday, March 8 (week 10), back Sunday, November 1 (week 44). UK: forward March 29 (week 13), back October 25 (week 43). Australia (NSW, VIC, ACT, TAS, SA): back April 5 (week 14), forward October 4 (week 40). India does not change its clocks.
How many weeks are in 2026?
2026 has 53 ISO weeks. Week 1 runs from Monday, December 29, 2025 to Sunday, January 4, 2026, and week 53 runs from Monday, December 28, 2026 to Sunday, January 3, 2027.
When does week 1 of 2026 start?
Week 1 of 2026 starts on Monday, December 29, 2025. Under ISO 8601, week 1 is the week containing the year's first Thursday, and January 1, 2026 is a Thursday.
What week number is New Year's Day 2026?
Thursday, January 1, 2026 is in ISO week 1 of 2026.
Is 2026 a 53-week year?
Yes. 2026 starts on a Thursday, so it has 53 ISO weeks. The previous 53-week ISO year was 2020 and the next one is 2032.
What week number is Christmas 2026?
Christmas Day 2026 is Friday, December 25 — ISO week 52. In the UK, Canada and Australia, Boxing Day falls on Saturday, December 26 and the substitute day off is Monday, December 28, which is in week 53.
What week number is July 4, 2026?
Independence Day 2026 is Saturday, July 4 — ISO week 27. It marks the 250th anniversary of the Declaration of Independence. The federal day off, Friday, July 3, is also in week 27.
How many working days are there in 2026?
2026 has 261 weekdays (Monday to Friday). Subtract the 11 US federal holidays, all of which land on a weekday once observed dates are used, and you get 250 working days.
How many weekends are in 2026?
52 weekends — 52 Saturdays and 52 Sundays. 2026 is a common year of 365 days that starts and ends on a Thursday, so Thursday is the only weekday that occurs 53 times.
Which ISO weeks of 2026 contain a US federal holiday?
Observed federal holidays fall in weeks 1, 4, 8, 22, 25, 27, 37, 42, 46, 48, 52.
What week number is Halloween 2026?
Halloween 2026 is Saturday, October 31 — ISO week 44. The US and Canada turn their clocks back the next day, Sunday, November 1, the last day of the same week.
When do the 2026 quarters end by week number?
Q1 ends Tuesday, March 31 (week 14), Q2 ends Tuesday, June 30 (week 27), Q3 ends Wednesday, September 30 (week 40) and Q4 ends Thursday, December 31 (week 53).
When are the UK Christmas bank holidays 2026?
Christmas Day is Friday, December 25. Boxing Day falls on Saturday, December 26, so the substitute bank holiday is Monday, December 28 (ISO week 53).
When is Thanksgiving in Canada 2026?
Canadian Thanksgiving is Monday, October 12, 2026 — ISO week 42, about six weeks before US Thanksgiving on November 26.
When is Australia Day 2026?
Australia Day is Monday, January 26, 2026 (ISO week 5) and is a public holiday in every state and territory.
When is Diwali 2026?
Diwali (Deepavali) is on Sunday, November 8, 2026 in India's central government holiday list (ISO week 45).
When is Republic Day 2026 in India?
Republic Day is Monday, January 26, 2026 (ISO week 5), a gazetted holiday nationwide. India keeps a single time zone (IST, UTC+5:30) and never changes its clocks.
Does the 2026 calendar start the week on Monday or Sunday?
Our 2026 calendars run Monday to Sunday and number every week the ISO 8601 way, so week 1 is always the week with the year's first Thursday. Many US-printed calendars start on Sunday — the week number is the reliable way to compare the two.