October 2027 calendar

31 days21 weekdaysStarts on FridayISO weeks 39–43

Week starts Week numbers Holidays

October 2027
Wk	Mon	Tue	Wed	Thu	Fri	Sat	Sun
39	27	28	29	30	1	2	3
40	4	5	6	7	8	9	10
41	11	12	13	14	15	16	17
42	18	19	20	21	22	23	24
43	25	26	27	28	29	30	31

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October 2027 in numbers

Days: 31
Weekdays (Mon–Fri): 21
Weekend days: 10
First and last day: Friday – Sunday
First and last working day: Fri, Oct 1 – Fri, Oct 29
Week numbers: 39–43
Day of the year: 274–304
Quarter: Q4 2027
Islamic months (computed): Jumada al-Ula – Jumada al-Akhirah 1449 AH

With 31 days, October 2027 has four full weeks plus 3 extra days, so Friday, Saturday and Sunday occur five times; every other weekday occurs four times. It has five full Friday-to-Sunday weekends, which only happens in a 31-day month that starts on a Friday.

October 1 is day 274 of the year, so October 2027 covers day numbers 274 to 304. In the Umm al-Qura Islamic calendar, 1 Jumada al-Ula 1449 AH falls on October 1 and 1 Jumada al-Akhirah 1449 AH falls on October 31 (computed; where months begin with the sighting of the new crescent, the start can differ by a day).

Public holidays in October 2027

Date	Holiday	Where
Fri, Oct 1	National Day	Hong Kong
Mon, Oct 4	Labour Day	Australia: New South Wales
Mon, Oct 4	King's Birthday	Australia: Queensland
Fri, Oct 8	Chung Yeung Festival	Hong Kong
Mon, Oct 11	Columbus Day	United States (federal)
Mon, Oct 11	Thanksgiving Day	Canada (federal)
Mon, Oct 11	Sports Day	Japan
Tue, Oct 12	National Day of Spain	Spain
Mon, Oct 25	October Bank Holiday	Ireland
Mon, Oct 25	Labour Day	New Zealand
Thu, Oct 28	Deepavali	Singapore

National holidays of the 17 sets we take from official government sources; see public holidays by country for regional days and sources. Where a holiday that falls on a weekend moves to a weekday, the table shows the day off.

Other dates in October 2027

Sat, Oct 2: Rosh Hashanah 5788Jewish New Year, 1 Tishrei; begins at sunset the evening before
Mon, Oct 11: Yom Kippur10 Tishrei; begins at sunset the evening before
Sun, Oct 31: HalloweenOctober 31

Days that many people keep but that are not public holidays in our 17 sets, each from its fixed rule. Jewish dates begin at sunset the evening before; Islamic dates follow the Umm al-Qura calendar and are announced locally.

Clock changes and seasons

Sun, Oct 3: South-east Australia (Sydney, Melbourne)clocks go forward one hour at 2:00 a.m., AEST (UTC+10) → AEDT (UTC+11)
Sun, Oct 31: United Kingdom and Irelandclocks go back one hour at 2:00 a.m., BST (UTC+1) → GMT (UTC+0)
Sun, Oct 31: European Union (Central European Time)clocks go back one hour at 3:00 a.m., CEST (UTC+2) → CET (UTC+1)

Clock changes from IANA tzdata as the rules stand today. Equinox and solstice times are the US Naval Observatory’s, in UTC.

Questions

How many weekdays are in October 2027?

21 weekdays (Monday to Friday) and 10 weekend days, out of 31 days. Public holidays are not subtracted, because they depend on the country; this month has 11 holiday dates in the countries we cover (see the table on this page).

What day does October 2027 start on?

October 2027 starts on Friday, October 1, 2027 and ends on Sunday, October 31, 2027. The first working day is Fri, Oct 1 and the last is Fri, Oct 29.

What week numbers are in October 2027?

Under ISO 8601 (weeks from Monday) October 2027 spans weeks 39–43. The week number page explains the rule.

What is the day number of October 1, 2027?

October 1 is day 274 of 2027 and October 31 is day 304. In the YYDDD format often called a Julian date, the month runs from 27274 to 27304.

What holidays are in October 2027?

National Day (Fri, Oct 1: Hong Kong); Labour Day (Mon, Oct 4: Australia: New South Wales); King's Birthday (Mon, Oct 4: Australia: Queensland); Chung Yeung Festival (Fri, Oct 8: Hong Kong); Columbus Day (Mon, Oct 11: United States (federal)); Thanksgiving Day (Mon, Oct 11: Canada (federal)); Sports Day (Mon, Oct 11: Japan); National Day of Spain (Tue, Oct 12: Spain), and 3 more in the table above.