Every Day Counts
Hexagonal Days
 
Age: 15,993 days
Date of birth
Your 74th Hexagonal Day is on
Monday
when you will be
16,207 days old

Hexagonal Days occur when your day age is a centred hexagonal number.

A centred hexagonal number, or hex number, is a centred figurate number that represents a hexagon with a dot in the centre and all other dots surrounding the centre dot in a hexagonal lattice.

Strictly, a hexagonal number is the number of distinct dots in a pattern of dots consisting of the outlines of regular hexagons with sides up to n dots, when the hexagons are overlaid so that they share one vertex.

We choose to use centred hexagonal numbers to calculate our Hexagonal Days because all (outlined) hexagonal numbers are also triangular numbers and these are already commemorated in our Triangular Days.

Centred Hexagonal
1
7
19
37
61
91
Hexagonal
1
6
15
28
45
66
91
Triangular
1
3
6
10
15
21
28
36
45
55
66
78
91

Remind me, please


Next Main Events
Day Age
Event
Days Ahead
Year Age
17 Jul 2025
16,000
7
43
16 Sep 2025
16,061
68
43
04 Nov 2025
16,110
117
44
23 Nov 2025
16,129
136
44
09 Feb 2026
16,207
214
44
05 Aug 2026
16,384
391
44
05 Jan 2027
16,537
544
45
15 May 2027
16,667
674
45
09 Nov 2029
17,576
1,583
48
24 Mar 2030
17,711
1,718
48
30 Jul 2042
22,222
6,229
60
10 Feb 2045
23,148
7,155
63
09 Jan 2048
24,211
8,218
66
18 Jun 2130
54,321
38,328
148
Ordinal
Day Age
Date
Age
73rd
15,769
28 Nov 2024
43
74th
16,207
09 Feb 2026
44
1
75th
16,651
29 Apr 2027
45
76th
17,101
22 Jul 2028
46
77th
17,557
21 Oct 2029
48
78th
18,019
26 Jan 2031
49
79th
18,487
08 May 2032
50
80th
18,961
25 Aug 2033
51
81st
19,441
18 Dec 2034
53
82nd
19,927
17 Apr 2036
54
83rd
20,419
22 Aug 2037
55
84th
20,917
02 Jan 2039
57
85th
21,421
20 May 2040
58
86th
21,931
12 Oct 2041
60
87th
22,447
12 Mar 2043
61
88th
22,969
15 Aug 2044
62
89th
23,497
25 Jan 2046
64
90th
24,031
13 Jul 2047
65
91st
24,571
03 Jan 2049
67
92nd
25,117
03 Jul 2050
68