Every month of 2100 as a printable table, with public holidays, ISO week numbers and the year's eclipses, moon phases and meteor showers.
2100 has 365 days, starts on a Friday, is not a leap year, and runs to 52 ISO weeks. It runs from Friday 1 January 2100 to Friday 31 December 2100. There are 11 United States federal holidays in 2100, three of which fall at a weekend and are kept on a different day. Worth knowing: 1 January 2100 falls in week 53 of 2099, not in week 1 of 2100.
Until 2100 begins
26810days
The 2100 calendar, month by month
January
Wk
M
T
W
T
F
S
S
53
1New Year's Day
2
3
1
42 January
5
6
7
8
9
10
2
11
12
13
14
15
16
17
3
18Martin Luther King Jr. Day
19
20
21
22
23
24
4
25
26Australia Day
27
28
29
30
31
February
Wk
M
T
W
T
F
S
S
5
1St Brigid's Day
2
3
4
5
6
7
6
8
9
10
11
12
13
14
7
15Washington's Birthday
16
17
18
19
20
21
8
22
23
24
25
26
27
28
March
Wk
M
T
W
T
F
S
S
9
1
2
3
4
5
6
7
10
8
9
10
11
12
13
14
11
15
16
17St Patrick's Day
18
19
20
21
12
22
23
24
25
26Good Friday
27Easter Saturday
28
13
29Easter Monday
30
31
April
Wk
M
T
W
T
F
S
S
13
1
2
3
4
14
5
6
7
8
9
10
11
15
12
13
14
15
16
17
18
16
19
20
21
22
23
24
25
17
26Anzac Day
27
28
29
30
May
Wk
M
T
W
T
F
S
S
17
1
2
18
3Early May Bank Holiday, May Day
4
5
6
7
8
9
19
10
11
12
13
14
15
16
20
17
18
19
20
21
22
23
21
24Victoria Day
25
26
27
28
29
30
22
31Memorial Day, Spring Bank Holiday
June
Wk
M
T
W
T
F
S
S
22
1
2
3
4
5
6
23
7June Bank Holiday
8
9
10
11
12
13
24
14King's Birthday
15
16
17
18Juneteenth National Independence Day
19
20
25
21
22
23
24
25
26
27
26
28
29
30
July
Wk
M
T
W
T
F
S
S
26
1Canada Day
2
3
4
27
5Independence Day
6
7
8
9
10
11
28
12Battle of the Boyne (Orangemen’s Day)
13
14
15
16
17
18
29
19
20
21
22
23
24
25
30
26
27
28
29
30
31
August
Wk
M
T
W
T
F
S
S
30
1
31
2Summer Bank Holiday, August Bank Holiday
3
4
5
6
7
8
32
9
10
11
12
13
14
15
33
16
17
18
19
20
21
22
34
23
24
25
26
27
28
29
35
30Summer Bank Holiday
31
September
Wk
M
T
W
T
F
S
S
35
1
2
3
4
5
36
6Labor Day, Labour Day
7
8
9
10
11
12
37
13
14
15
16
17
18
19
38
20
21
22
23
24
25
26
39
27
28
29
30National Day for Truth and Reconciliation
October
Wk
M
T
W
T
F
S
S
39
1
2
3
40
4
5
6
7
8
9
10
41
11Columbus Day, Thanksgiving
12
13
14
15
16
17
42
18
19
20
21
22
23
24
43
25October Bank Holiday
26
27
28
29
30
31
November
Wk
M
T
W
T
F
S
S
44
1
2
3
4
5
6
7
45
8
9
10
11Veterans Day, Remembrance Day
12
13
14
46
15
16
17
18
19
20
21
47
22
23
24
25Thanksgiving Day
26
27
28
48
29
30St Andrew's Day
December
Wk
M
T
W
T
F
S
S
48
1
2
3
4
5
49
6
7
8
9
10
11
12
50
13
14
15
16
17
18
19
51
20
21
22
23
24Christmas Day
25
26
52
27Christmas Day
28Boxing Day, St Stephen's Day
29
30
31
Public holiday in the selected country
Today
Saturday and Sunday
Wk ISO 8601 week number
Weeks start on Monday so that the week number in the left gutter applies to the
whole row. ISO 8601 defines week 1 as the week containing the first Thursday of
the year, which is why 2100 has 52 weeks and why 1 January is not always
in week 1.
Public holidays in 2100
The 11 federal holidays in 5 U.S.C. 6103, with the rules that were actually in force in each year. State and local holidays are not included.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
18 January 2100
Monday
Martin Luther King Jr. Day
On the day
15 February 2100
Monday
Washington's Birthday (Widely called Presidents’ Day. The federal name is still Washington’s Birthday.)
On the day
31 May 2100
Monday
Memorial Day
On the day
19 June 2100
Saturday
Juneteenth National Independence Day
Friday 18 June 2100
4 July 2100
Sunday
Independence Day
Monday 5 July 2100
6 September 2100
Monday
Labor Day
On the day
11 October 2100
Monday
Columbus Day (Kept as Indigenous Peoples’ Day in a number of states.)
On the day
11 November 2100
Thursday
Veterans Day
On the day
25 November 2100
Thursday
Thanksgiving Day
On the day
25 December 2100
Saturday
Christmas Day
Friday 24 December 2100
Bank holidays in England and Wales under the Banking and Financial Dealings Act 1971, including the one-off royal and jubilee holidays.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
26 March 2100
Friday
Good Friday
On the day
29 March 2100
Monday
Easter Monday
On the day
3 May 2100
Monday
Early May Bank Holiday
On the day
31 May 2100
Monday
Spring Bank Holiday
On the day
30 August 2100
Monday
Summer Bank Holiday
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
Boxing Day
Tuesday 28 December 2100
Bank holidays in Scotland. Scotland keeps 2 January and the first Monday in August, and does not keep Easter Monday.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
2 January 2100
Saturday
2 January
Monday 4 January 2100
26 March 2100
Friday
Good Friday
On the day
3 May 2100
Monday
Early May Bank Holiday
On the day
31 May 2100
Monday
Spring Bank Holiday
On the day
2 August 2100
Monday
Summer Bank Holiday
On the day
30 November 2100
Tuesday
St Andrew's Day
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
Boxing Day
Tuesday 28 December 2100
Bank holidays in Northern Ireland: the England and Wales set plus St Patrick's Day and the Battle of the Boyne.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
17 March 2100
Wednesday
St Patrick's Day
On the day
26 March 2100
Friday
Good Friday
On the day
29 March 2100
Monday
Easter Monday
On the day
3 May 2100
Monday
Early May Bank Holiday
On the day
31 May 2100
Monday
Spring Bank Holiday
On the day
12 July 2100
Monday
Battle of the Boyne (Orangemen’s Day)
On the day
30 August 2100
Monday
Summer Bank Holiday
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
Boxing Day
Tuesday 28 December 2100
Public holidays in the Republic of Ireland under the Organisation of Working Time Act 1997.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
1 February 2100
Monday
St Brigid's Day (Ireland’s newest public holiday, first kept in 2023.)
On the day
17 March 2100
Wednesday
St Patrick's Day
On the day
29 March 2100
Monday
Easter Monday
On the day
3 May 2100
Monday
May Day
On the day
7 June 2100
Monday
June Bank Holiday
On the day
2 August 2100
Monday
August Bank Holiday
On the day
25 October 2100
Monday
October Bank Holiday
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
St Stephen's Day
Tuesday 28 December 2100
Federal statutory holidays. Provincial holidays (Family Day, Civic Holiday, St Jean Baptiste) are not included and vary by province.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
26 March 2100
Friday
Good Friday
On the day
24 May 2100
Monday
Victoria Day (The Monday before 25 May.)
On the day
1 July 2100
Thursday
Canada Day
On the day
6 September 2100
Monday
Labour Day
On the day
30 September 2100
Thursday
National Day for Truth and Reconciliation
On the day
11 October 2100
Monday
Thanksgiving
On the day
11 November 2100
Thursday
Remembrance Day
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
Boxing Day
Tuesday 28 December 2100
Public holidays kept nationally. State holidays (Labour Day, show days, Melbourne Cup) vary by state and are not included.
Date
Day
Holiday
Observed
1 January 2100
Friday
New Year's Day
On the day
26 January 2100
Tuesday
Australia Day
On the day
26 March 2100
Friday
Good Friday
On the day
27 March 2100
Saturday
Easter Saturday
On the day
29 March 2100
Monday
Easter Monday
On the day
25 April 2100
Sunday
Anzac Day (Substitute days for a weekend Anzac Day vary by state.)
Monday 26 April 2100
14 June 2100
Monday
King's Birthday (Not kept in June in Queensland or Western Australia.)
On the day
25 December 2100
Saturday
Christmas Day
Monday 27 December 2100
26 December 2100
Sunday
Boxing Day
Tuesday 28 December 2100
The sky in 2100
Equinoxes, solstices and eclipses are given in UTC, because an eclipse happens
at one instant everywhere. Convert to your own zone before you set an alarm.
Equinoxes and solstices, and the eclipses of 2100.
Date
Time (UTC)
Event
Detail
24 February 2100
15:01
Penumbral lunar eclipse
Visible anywhere the Moon is above the horizon.
10 March 2100
22:24
Annular solar eclipse
Greatest eclipse at 12.0°N 162.4°W, 87% of the Sun covered there.
20 March 2100
13:03
March equinox
Spring begins in the northern hemisphere, autumn in the southern.
21 June 2100
05:31
June solstice
The longest day in the northern hemisphere, the shortest in the southern.
19 August 2100
21:41
Penumbral lunar eclipse
Visible anywhere the Moon is above the horizon.
4 September 2100
08:45
Total solar eclipse
Greatest eclipse at 10.5°S 39.0°E, 100% of the Sun covered there.
22 September 2100
22:00
September equinox
Autumn begins in the northern hemisphere, spring in the southern.
21 December 2100
19:50
December solstice
The shortest day in the northern hemisphere, the longest in the southern.
Full moons
The traditional names are month-based, with two exceptions we compute rather
than assume: the Harvest Moon is the full moon nearest the September equinox,
and a second full moon inside one calendar month is a Blue Moon.
Date
Time (UTC)
Name
Note
26 January 2100
02:50
Wolf Moon
24 February 2100
14:51
Snow Moon
26 March 2100
01:05
Worm Moon
24 April 2100
09:43
Pink Moon
23 May 2100
17:25
Flower Moon
22 June 2100
01:11
Strawberry Moon
21 July 2100
10:13
Buck Moon
19 August 2100
21:30
Sturgeon Moon
18 September 2100
11:32
Harvest Moon
The full moon nearest the September equinox.
18 October 2100
04:06
Hunter's Moon
16 November 2100
22:19
Beaver Moon
16 December 2100
17:00
Cold Moon
All 50 moon phases in 2100
Date
Time (UTC)
Phase
3 January 2100
13:03
Last Quarter
10 January 2100
12:56
New Moon
18 January 2100
12:34
First Quarter
26 January 2100
02:50
Full Moon
1 February 2100
21:16
Last Quarter
9 February 2100
04:55
New Moon
17 February 2100
09:22
First Quarter
24 February 2100
14:51
Full Moon
3 March 2100
06:11
Last Quarter
10 March 2100
22:29
New Moon
19 March 2100
02:59
First Quarter
26 March 2100
01:05
Full Moon
1 April 2100
16:36
Last Quarter
9 April 2100
16:17
New Moon
17 April 2100
16:42
First Quarter
24 April 2100
09:43
Full Moon
1 May 2100
05:01
Last Quarter
9 May 2100
08:54
New Moon
17 May 2100
02:42
First Quarter
23 May 2100
17:25
Full Moon
30 May 2100
19:35
Last Quarter
7 June 2100
23:32
New Moon
15 June 2100
09:41
First Quarter
22 June 2100
01:11
Full Moon
29 June 2100
11:52
Last Quarter
7 July 2100
12:06
New Moon
14 July 2100
14:43
First Quarter
21 July 2100
10:13
Full Moon
29 July 2100
05:09
Last Quarter
5 August 2100
23:02
New Moon
12 August 2100
19:10
First Quarter
19 August 2100
21:30
Full Moon
27 August 2100
22:37
Last Quarter
4 September 2100
08:50
New Moon
11 September 2100
00:35
First Quarter
18 September 2100
11:32
Full Moon
26 September 2100
15:33
Last Quarter
3 October 2100
18:03
New Moon
10 October 2100
08:33
First Quarter
18 October 2100
04:06
Full Moon
26 October 2100
07:19
Last Quarter
2 November 2100
03:14
New Moon
8 November 2100
20:15
First Quarter
16 November 2100
22:19
Full Moon
24 November 2100
21:13
Last Quarter
1 December 2100
13:00
New Moon
8 December 2100
12:09
First Quarter
16 December 2100
17:00
Full Moon
24 December 2100
08:46
Last Quarter
30 December 2100
23:56
New Moon
Meteor showers
Peak nights drift by about a day between years, because the Earth meets each
stream at a fixed point in its orbit rather than on a fixed date. What
changes the view far more is the Moon, so we compute how much of it is lit
on the peak night of 2100.
Peak
Shower
Rate/hour
Moon lit
Viewing
3 January 2100
Quadrantids (debris from Asteroid 2003 EH1)
110
46%
Moonlight will wash out fainter meteors
22 April 2100
Lyrids (debris from Comet Thatcher)
18
97%
Bright moon, only the brightest will show
6 May 2100
Eta Aquariids (debris from Halley's Comet)
50
5%
Dark sky, near new moon
30 July 2100
Southern Delta Aquariids (debris from Comet 96P/Machholz)
25
34%
Mostly dark
12 August 2100
Perseids (debris from Comet Swift-Tuttle)
100
51%
Moonlight will wash out fainter meteors
8 October 2100
Draconids (debris from Comet 21P/Giacobini-Zinner)
10
34%
Mostly dark
21 October 2100
Orionids (debris from Halley's Comet)
20
88%
Bright moon, only the brightest will show
5 November 2100
Southern Taurids (debris from Comet Encke)
5
20%
Mostly dark
12 November 2100
Northern Taurids (debris from Comet Encke)
5
86%
Bright moon, only the brightest will show
17 November 2100
Leonids (debris from Comet Tempel-Tuttle)
15
99%
Bright moon, only the brightest will show
14 December 2100
Geminids (debris from Asteroid 3200 Phaethon)
150
97%
Bright moon, only the brightest will show
22 December 2100
Ursids (debris from Comet 8P/Tuttle)
10
66%
Moonlight will wash out fainter meteors
About the year 2100
2100 at a glance
Days
365
Leap year
No
1 January
Friday
31 December
Friday
ISO weeks
52
Weekend days
104
2100 is not a leap year, so February has 28 days.
Years you can reuse this calendar for
These years start on the same weekday and have the same February, so the grid
above is identical. A 2100 wall calendar hangs again, unchanged, in any of them.
Public holidays computed from statute, cross-checked against
Nager.Date for every year it covers. Astronomical
events computed with astronomy-engine. Week numbers follow ISO 8601. Times are UTC.