Every Day Counts
Hexagonal Days
 
Age: 17,469 days
Date of birth
Your 77th Hexagonal Day is on
Tuesday
when you will be
17,557 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
31 Mar 2024
17,471
2
47
25 Jun 2024
17,557
88
48
14 Jul 2024
17,576
107
48
16 Jul 2024
17,578
109
48
04 Nov 2024
17,689
220
48
26 Nov 2024
17,711
242
48
16 Mar 2025
17,821
352
48
11 Sep 2025
18,000
531
49
06 Nov 2025
18,056
587
49
03 Apr 2037
22,222
4,753
60
16 Oct 2039
23,148
5,679
63
13 Sep 2042
24,211
6,742
66
16 Feb 2066
32,768
15,299
89
20 Feb 2125
54,321
36,852
148
Ordinal
Day Age
Date
Age
76th
17,101
27 Mar 2023
46
77th
17,557
25 Jun 2024
48
1
78th
18,019
30 Sep 2025
49
79th
18,487
11 Jan 2027
50
80th
18,961
29 Apr 2028
51
81st
19,441
22 Aug 2029
53
82nd
19,927
21 Dec 2030
54
83rd
20,419
26 Apr 2032
55
84th
20,917
06 Sep 2033
57
85th
21,421
23 Jan 2035
58
86th
21,931
16 Jun 2036
60
87th
22,447
14 Nov 2037
61
88th
22,969
20 Apr 2039
62
89th
23,497
29 Sep 2040
64
90th
24,031
17 Mar 2042
65
91st
24,571
08 Sep 2043
67
92nd
25,117
07 Mar 2045
68
93rd
25,669
10 Sep 2046
70
94th
26,227
21 Mar 2048
71
95th
26,791
06 Oct 2049
73