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December 2100 Calendar

December 2100 starts on a Wednesday and ends on a Friday. It has 31 days and 21 working days in the US.

Saved in this browserClick any day to type on it. Use ← → for the previous or next month.Tap any day to add a note or highlight it.

How to use this calendar

  1. The month and year boxes with arrows and a Today button above a month calendar.

    Step 1Go to any month

    Use the arrows or the month and year boxes. Today brings you back to this month.

  2. A month calendar with notes and colored highlights on several days.

    Step 2Type your plans

    Click any day to type. Notes save in your browser and also show on the week and year views.

  3. The Holidays switch turned on, with Halloween marked on October 31.

    Step 3Turn on holidays

    Switch on Holidays to mark public holidays for your country, such as Columbus Day and Halloween.

  4. The print bar with this month, all of the year and next 12 months as choices.

    Step 4Print one month or twelve

    Pick this month, all 12 months or the next 12 months, then press Print or Download PDF.

December 2100 at a glance

December 2100

SMTWTFS
1234
567891011
12131415161718
19202122232425
262728293031
First day
Wednesday, December 1
Last day
Friday, December 31
Days
31
Weekdays
23 weekdays, 8 weekend days
US working days
21
ISO weeks
Weeks 48–52
Moon phases (UTC)
New moon Dec 1, First quarter Dec 8, Full moon Dec 16, Last quarter Dec 24, New moon Dec 30
Zodiac signs
Sagittarius (to Dec 21), Capricorn (from Dec 22)
Birthstone
Turquoise
Birth flower
Narcissus

Holidays and observances in December 2100

US federal holidays and common observances. Turn on other countries or religious calendars in the holiday settings above.

DateDayHoliday Type
Dec 24 Friday Christmas Day (observed) Federal holiday
Dec 24 Friday Christmas Eve Observance
Dec 25 Saturday Christmas Day Federal holiday
Dec 31 Friday New Year's Day (observed) Federal holiday
Dec 31 Friday New Year's Eve Observance

Public holidays in the UK, Canada and Australia

DateDayHoliday Country
Dec 25 Saturday Christmas Day United Kingdom
Dec 25 Saturday Christmas Day Canada
Dec 25 Saturday Christmas Day Australia
Dec 26 Sunday Boxing Day United Kingdom
Dec 26 Sunday Boxing Day Canada
Dec 26 Sunday Boxing Day Australia
Dec 27 Monday Christmas Day (substitute day) United Kingdom
Dec 27 Monday Christmas Day (observed) Canada
Dec 27 Monday Christmas Day (additional day) Australia
Dec 28 Tuesday Boxing Day (substitute day) United Kingdom
Dec 28 Tuesday Boxing Day (observed) Canada
Dec 28 Tuesday Boxing Day (additional day) Australia

About December

December has the shortest days of the year in the north, with the winter solstice around the 21st. It is the busiest month for holidays and travel, with Hanukkah, Christmas and New Year's Eve, and most schools close for a winter break.

Questions and answers

What day does December 2100 start on?

December 2100 starts on Wednesday, December 1, and ends on Friday, December 31.

How many working days are in December 2100?

There are 21 working days in December 2100 in the US: 23 weekdays minus 2 federal holidays, Christmas Day and New Year's Day.

What holidays are in December 2100?

US holidays and observances in December 2100: Christmas Day (Saturday, December 25), Christmas Eve (Friday, December 24) and New Year's Eve (Friday, December 31).

When is the full moon in December 2100?

The full moon in December 2100 is on Thursday, December 16 at 17:01 UTC. Turn on moon phases in the settings to see every phase on the calendar.

How do I print a December 2100 calendar?

Press Print above the calendar, or Download PDF to save a file. Choose the paper size, orientation and design in the settings first. Your notes print exactly as you see them.

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