January 2023 Calendar
January 2023 has 31 days, starting on a Sunday and ending on a Tuesday. It spans ISO weeks 52–5, with 22 weekdays and 9 weekend days — and 8 public holidays across the 12 countries listed below.
January 2023 month grid
January 2023
| W | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 52 | 26 | 27 | 28 | 29 | 30 | 31 | 1 New Year's Day |
| 1 | 2 New Year's Day (substitute day) · New Year's Day · Public Holiday | 3 | 4 | 5 | 6 Full Moon 23:09 UTC | 7 | 8 |
| 2 | 9 Coming of Age Day | 10 | 11 | 12 | 13 | 14 | 15 Last Quarter 02:11 UTC |
| 3 | 16 Martin Luther King Jr. Day | 17 | 18 | 19 | 20 | 21 New Moon 20:54 UTC | 22 |
| 4 | 23 | 24 | 25 | 26 Australia Day · Republic Day | 27 | 28 First Quarter 15:20 UTC | 29 |
| 5 | 30 | 31 | 1 | 2 | 3 | 4 | 5 |
12 public holiday 🌑 🌓 🌕 🌗 moon phase (UTC date) W = ISO week
Public holidays in January 2023
| Date | Holiday | Observed in |
|---|---|---|
| New Year's Day | US, UK, Canada, Australia, Ireland, Germany, France, Japan, Brazil, Mexico, South Africa | |
| New Year's Day (substitute day) | US, UK, Japan | |
| New Year's Day | Australia | |
| Public Holiday | 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 2023 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
- Full Moon
- Last Quarter
- New Moon
- First Quarter
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 2023 at a glance
- Days
- 31
- Weekdays
- 22
- Weekend days
- 9
- ISO weeks
- 52–5
- Day of year
- 1–31 of 365
- Quarter
- Q1
- Days left in 2023 after the 31st
- 334
- Friday the 13th
- Yes
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 2023: common questions
How many working days are there in January 2023?
January 2023 has 22 weekdays (Monday to Friday) and 9 weekend days. In the United States, New Year's Day (Sun, Jan 1), New Year's Day (substitute day) (Mon, Jan 2) and Martin Luther King Jr. Day (Mon, Jan 16) fall in the month, leaving 20 working days. In the United Kingdom, New Year's Day (Sun, Jan 1) and New Year's Day (substitute day) (Mon, Jan 2) leave 21 working days (UK-wide bank holidays only; England, Scotland and Northern Ireland each add their own).
What week numbers are in January 2023?
January 2023 covers ISO weeks 52, 1, 2, 3, 4, 5. ISO weeks start on Monday, so January 1, a Sunday, falls in week 52, the last week of 2022's ISO year.
When is the full moon in January 2023?
Friday, January 6 at 23:09 UTC. The new moon is on Saturday, January 21.
What day of the week does January 2023 start on?
January 2023 starts on a Sunday and ends on a Tuesday (the 31st). It runs from day 1 to day 31 of the year, and the 13th falls on a Friday.