Every Day Counts
Hexagonal Days
 
Age: 18,155 days
Date of birth
Your 79th Hexagonal Day is on
Sunday
when you will be
18,487 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
23 Apr 2024
18,181
26
49
06 Jun 2024
18,225
70
49
25 Sep 2024
18,336
181
50
17 Feb 2025
18,481
326
50
23 Feb 2025
18,487
332
50
13 Nov 2025
18,750
595
51
21 Jul 2026
19,000
845
52
03 Jun 2028
19,683
1,528
53
17 May 2035
22,222
4,067
60
28 Nov 2037
23,148
4,993
63
26 Oct 2040
24,211
6,056
66
28 Dec 2052
28,657
10,502
78
31 Mar 2064
32,768
14,613
89
05 Apr 2123
54,321
36,166
148
Ordinal
Day Age
Date
Age
78th
18,019
13 Nov 2023
49
79th
18,487
23 Feb 2025
50
1
80th
18,961
12 Jun 2026
51
81st
19,441
05 Oct 2027
53
82nd
19,927
02 Feb 2029
54
83rd
20,419
09 Jun 2030
55
84th
20,917
20 Oct 2031
57
85th
21,421
07 Mar 2033
58
86th
21,931
30 Jul 2034
60
87th
22,447
28 Dec 2035
61
88th
22,969
02 Jun 2037
62
89th
23,497
12 Nov 2038
64
90th
24,031
29 Apr 2040
65
91st
24,571
21 Oct 2041
67
92nd
25,117
20 Apr 2043
68
93rd
25,669
23 Oct 2044
70
94th
26,227
04 May 2046
71
95th
26,791
19 Nov 2047
73
96th
27,361
11 Jun 2049
74
97th
27,937
08 Jan 2051
76