The 157th day of a non-leap year. The 158th day of a leap year.

 

Square Root Day is when both the day and the month are the square root of the last two digits in the year.  There are only 9 such days in a century: 01/01/yy01, 02/02/yy04, 03/03/yy09, 04/04/yy16, 05/05/yy25, 06/06/yy36, 07/07/yy49, 08/08/yy64 and 09/09/yy81.

 

The days of April 04 (04/04), June 06 (06/06), August 08 (08/08), October 10 (10/10), December 12 (12/12), May 09 (05/09), September 05 (09/05), July 11 (07/11) and November  07 (11/07) always occur on the same day of the week as for February 28 (02/28) in any year (or February 29 (02/29) in a leap year, i.e. always the last day of February).


 

 

 

 

 

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30