January 2021 Calendar
January 2021 has 31 days, starting on a Friday and ending on a Sunday. It spans ISO weeks 53–4, with 21 weekdays and 10 weekend days — and 5 public holidays across the 12 countries listed below.
January 2021 month grid
January 2021
| W | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 53 | 28 | 29 | 30 | 31 | 1 New Year's Day | 2 | 3 |
| 1 | 4 | 5 | 6 Last Quarter 09:37 UTC | 7 | 8 | 9 | 10 |
| 2 | 11 Coming of Age Day | 12 | 13 New Moon 05:00 UTC | 14 | 15 | 16 | 17 |
| 3 | 18 Martin Luther King Jr. Day | 19 | 20 First Quarter 21:02 UTC | 21 | 22 | 23 | 24 |
| 4 | 25 | 26 Australia Day · Republic Day | 27 | 28 Full Moon 19:16 UTC | 29 | 30 | 31 |
| 5 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
12 public holiday 🌑 🌓 🌕 🌗 moon phase (UTC date) W = ISO week
Public holidays in January 2021
| Date | Holiday | Observed in |
|---|---|---|
| New Year's Day | US, UK, Canada, Australia, Ireland, Germany, France, Japan, Brazil, Mexico, South Africa | |
| Coming of Age Day | Japan | |
| Martin Luther King Jr. Day | US | |
| Australia Day | Australia | |
| Republic Day | India |
No national public holiday in January 2021 for the selected country.
National holidays only, from the open-source date-holidays dataset. States, provinces and regions add their own — see each country's holiday page for the full list and observances.
Moon phases
- Last Quarter
- New Moon
- First Quarter
- Full Moon
Times are shown in your time zone when JavaScript is on, UTC otherwise; near midnight the local date can differ. For moonrise and moonset see the moon pages for New York, London or Sydney.
January 2021 at a glance
- Days
- 31
- Weekdays
- 21
- Weekend days
- 10
- ISO weeks
- 53–4
- Day of year
- 1–31 of 365
- Quarter
- Q1
- Days left in 2021 after the 31st
- 334
- Friday the 13th
- No
The name: Named after Janus, the Roman god of doorways and beginnings.
Working days by country
Monday–Friday minus national public holidays that fall on a weekday. Regional holidays are not subtracted.
Need a span that crosses months? Use the date and time calculator.
January 2021: common questions
How many working days are there in January 2021?
January 2021 has 21 weekdays (Monday to Friday) and 10 weekend days. In the United States, New Year's Day (Fri, Jan 1) and Martin Luther King Jr. Day (Mon, Jan 18) fall in the month, leaving 19 working days. In the United Kingdom, New Year's Day (Fri, Jan 1) leaves 20 working days (UK-wide bank holidays only; England, Scotland and Northern Ireland each add their own).
What week numbers are in January 2021?
January 2021 covers ISO weeks 53, 1, 2, 3, 4. ISO weeks start on Monday, so January 1, a Friday, falls in week 53, the last week of 2020's ISO year.
When is the full moon in January 2021?
Thursday, January 28 at 19:16 UTC. The new moon is on Wednesday, January 13.
What day of the week does January 2021 start on?
January 2021 starts on a Friday and ends on a Sunday (the 31st). It runs from day 1 to day 31 of the year.