How Many Weeks are in a Year

The origin of the calendar currently imposed in a large part of the world (the Gregorian calendar), was originated in Europe in the year 1528.

This came as a substitute for the system that at that time reigned in society: the Julian calendar. Imposed by the great Julius Caesar in the year 46 a.C.

After centuries of imposition, Pope Gregory XIII decided to transform this method. Promulgating a new style through a reform document known as Inter Gravissimas.

(See also how many days in a year exactly).

The new version consists of 365 solar days, with the exception of leap years. These already existed in the Julian calendar, between February 23 and 24.

However, Gregory XIII placed this extra day at the end of the same month. The change was introduced to correct the gap between the duration of the tropical year and the traditional calendar year.

Each time the last number of the year is a multiple of four (2004, 2008, 2012, 2016 …), we will be facing a leap year.

 

How Many weeks in a year exactly

Pope Gregory XIII established the current calendar. To deduce the number of weeks that this specific time interval has, it is only necessary to perform a simple mathematical calculation.

The exact figure is obtained by dividing the number of days that the year has, by the number of days that make up the week. Resulting in a total of 52 weeks in 1 year, exactly 52,1429 in one year.

These will not always be complete. Many of them do not start on a Monday and end on a Sunday. Since it depends on the precise day on which the new year begins. If we only counted the intact, we would have 50 weeks with a few days difference.

In the case of the leap years, the calendar would also be composed of 52 weeks. However, on this occasion and due to the imbalance mentioned above, we should add two more days that remain outside the sum.

 

In a leap Year

A leap year has exactly 52 weeks and 1 day.

 

In a normal Year

In a normal year there are 52 weeks and 2 days.

 

Not Including Weekends

If you don’t want to count weekends then the number of days is 261 so the number of week is exactly 37,28 weeks (261/7).

 

Weeks In School Year

In a school year there are 36 weeks. They are split in two semesters, 18 weeks each.

In days the average number is 180.

 

Working Weeks Per Year

Each year has an average of 48 working weeks. This assumes holidays and free days are 4 weeks. It is not possible to answer this accurately as each person and country is different.

 

2017

2017 had 52 weeks. Detail below:

01January 2, 2017January 8, 2017
02January 9, 2017January 15, 2017
03January 16, 2017January 22, 2017
04January 23, 2017January 29, 2017
05January 30, 2017February 5, 2017
06February 6, 2017February 12, 2017
07February 13, 2017February 19, 2017
08February 20, 2017February 26, 2017
09February 27, 2017March 5, 2017
10March 6, 2017March 12, 2017
11March 13, 2017March 19, 2017
12March 20, 2017March 26, 2017
13March 27, 2017April 2, 2017
14April 3, 2017April 9, 2017
15April 10, 2017April 16, 2017
16April 17, 2017April 23, 2017
17April 24, 2017April 30, 2017
18May 1, 2017May 7, 2017
19May 8, 2017May 14, 2017
20May 15, 2017May 21, 2017
21May 22, 2017May 28, 2017
22May 29, 2017June 4, 2017
23June 5, 2017June 11, 2017
24June 12, 2017June 18, 2017
25June 19, 2017June 25, 2017
26June 26, 2017July 2, 2017
27July 3, 2017July 9, 2017
28July 10, 2017July 16, 2017
29July 17, 2017July 23, 2017
30July 24, 2017July 30, 2017
31July 31, 2017August 6, 2017
32August 7, 2017August 13, 2017
33August 14, 2017August 20, 2017
34August 21, 2017August 27, 2017
35August 28, 2017September 3, 2017
36September 4, 2017September 10, 2017
37September 11, 2017September 17, 2017
38September 18, 2017September 24, 2017
39September 25, 2017October 1, 2017
40October 2, 2017October 8, 2017
41October 9, 2017October 15, 2017
42October 16, 2017October 22, 2017
43October 23, 2017October 29, 2017
44October 30, 2017November 5, 2017
45November 6, 2017November 12, 2017
46November 13, 2017November 19, 2017
47November 20, 2017November 26, 2017
48November 27, 2017December 3, 2017
49December 4, 2017December 10, 2017
50December 11, 2017December 17, 2017
51December 18, 2017December 24, 2017
52December 25, 2017December 31, 2017

 

2018

 

The complete detail. W is week number

January

WMonTueWedThuFriSatSun
011234567
02891011121314
0315161718192021
0422232425262728
052930311234

 

February 2018

WMonTueWedThuFriSatSun
052930311234
06567891011
0712131415161718
0819202122232425
092627281234

 

March

WMonTueWedThuFriSatSun
092627281234
10567891011
1112131415161718
1219202122232425
132627282930311

 

April

WMonTueWedThuFriSatSun
132627282930311
142345678
159101112131415
1616171819202122
1723242526272829
1830123456

 

May

WMonTueWedThuFriSatSun
1830123456
1978910111213
2014151617181920
2121222324252627
2228293031123

 

June

WMonTueWedThuFriSatSun
2228293031123
2345678910
2411121314151617
2518192021222324
262526272829301

 

July

WMonTueWedThuFriSatSun
262526272829301
272345678
289101112131415
2916171819202122
3023242526272829
31303112345

 

August

WMonTueWedThuFriSatSun
31303112345
326789101112
3313141516171819
3420212223242526
35272829303112

 

September

WMonTueWedThuFriSatSun
35272829303112
363456789
3710111213141516
3817181920212223
3924252627282930

 

October

WMonTueWedThuFriSatSun
401234567
41891011121314
4215161718192021
4322232425262728
442930311234

 

November

WMonTueWedThuFriSatSun
442930311234
45567891011
4612131415161718
4719202122232425
48262728293012

 

December

WMonTueWedThuFriSatSun
48262728293012
493456789
5010111213141516
5117181920212223
5224252627282930

 

Video