Every Day Counts
Hexagonal Days
 
Age: 12,861 days
Date of birth
Your 66th Hexagonal Day is on
Friday
when you will be
12,871 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
11 Jul 2025
12,871
10
35
20 Jul 2025
12,880
19
35
30 Aug 2025
12,921
60
35
21 Oct 2025
12,973
112
35
13 Nov 2025
12,996
135
35
17 Nov 2025
13,000
139
35
30 May 2026
13,194
333
36
19 Feb 2028
13,824
963
37
31 May 2032
15,387
2,526
42
22 Feb 2035
16,384
3,523
44
11 Oct 2038
17,711
4,850
48
16 Feb 2051
22,222
9,361
60
30 Aug 2053
23,148
10,287
63
05 Jan 2139
54,321
41,460
148
Ordinal
Day Age
Date
Age
65th
12,481
16 Jun 2024
34
66th
12,871
11 Jul 2025
35
1
67th
13,267
11 Aug 2026
36
68th
13,669
17 Sep 2027
37
69th
14,077
29 Oct 2028
38
70th
14,491
17 Dec 2029
39
71st
14,911
10 Feb 2031
40
72nd
15,337
11 Apr 2032
41
73rd
15,769
17 Jun 2033
43
74th
16,207
29 Aug 2034
44
75th
16,651
16 Nov 2035
45
76th
17,101
08 Feb 2037
46
77th
17,557
10 May 2038
48
78th
18,019
15 Aug 2039
49
79th
18,487
25 Nov 2040
50
80th
18,961
14 Mar 2042
51
81st
19,441
07 Jul 2043
53
82nd
19,927
04 Nov 2044
54
83rd
20,419
11 Mar 2046
55
84th
20,917
22 Jul 2047
57