| Wk | Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|---|
| 39 | 1 | 2 | |||||
| 40 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 41 | 10 | 11Columbus Day | 12 | 13 | 14 | 15 | 16 |
| 42 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 43 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 43 | 31Halloween |
October 2100 at a Glance
- Working days
- 20 of 31
- Weekend days
- 10
- Day of year
- 274–304
- Quarter
- Q4 · 61 days left in 2100
October 2100 starts on a Friday and ends on a Sunday. Long weekends this month: Columbus Day (Oct 9 – Oct 11, 3 days).
Holidays & Observances in October 2100
US Federal Holidays
- Columbus DayMon, Oct 11
Second Monday of October. Many states and cities observe it as Indigenous Peoples' Day instead.
Observances
- HalloweenSun, Oct 31
Public Holidays Around the World in October 2100
Scheduling with teams or family abroad? These countries have public holidays this month.
🇨🇦 Canada holidays 2100
- ThanksgivingMon, Oct 11
🇩🇪 Germany holidays 2100
- German Unity DaySun, Oct 3
🇯🇵 Japan holidays 2100
- Sports DayMon, Oct 11
🇨🇳 China holidays 2100
- National DayFri, Oct 1
- National Day (Day 2)Sat, Oct 2
- National Day (Day 3)Sun, Oct 3
🇮🇳 India holidays 2100
- Gandhi JayantiSat, Oct 2
🇧🇷 Brazil holidays 2100
- Our Lady of AparecidaTue, Oct 12
October 2100 FAQ
How many working days are in October 2100?
October 2100 has 20 working days (Monday–Friday, excluding US federal holidays) out of 31 days, with 10 weekend days.
What holidays are in October 2100?
US federal holidays in October 2100: Columbus Day (Mon, Oct 11).
What day of the week does October 2100 start on?
October 1, 2100 is a Friday, and October 31 is a Sunday. The month covers ISO weeks 39–43.
Make a Printable October 2100 Calendar

Opens the builder on October 2100 so you can add your own events and notes, then export a PDF. Want a ready-made look? Start from a monthly calendar template.
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