Every Day Counts
Hexagonal Days
 
Age: 18,365 days
Date of birth
Your 79th Hexagonal Day is on
Monday
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
14 Apr 2024
18,381
16
50
23 Jul 2024
18,481
116
50
29 Jul 2024
18,487
122
50
07 Aug 2024
18,496
131
50
08 Sep 2024
18,528
163
50
18 Apr 2025
18,750
385
51
24 Dec 2025
19,000
635
52
07 Nov 2027
19,683
1,318
53
20 Oct 2034
22,222
3,857
60
03 May 2037
23,148
4,783
63
31 Mar 2040
24,211
5,846
66
02 Jun 2052
28,657
10,292
78
04 Sep 2063
32,768
14,403
89
08 Sep 2122
54,321
35,956
148
Ordinal
Day Age
Date
Age
78th
18,019
18 Apr 2023
49
79th
18,487
29 Jul 2024
50
1
80th
18,961
15 Nov 2025
51
81st
19,441
10 Mar 2027
53
82nd
19,927
08 Jul 2028
54
83rd
20,419
12 Nov 2029
55
84th
20,917
25 Mar 2031
57
85th
21,421
10 Aug 2032
58
86th
21,931
02 Jan 2034
60
87th
22,447
02 Jun 2035
61
88th
22,969
05 Nov 2036
62
89th
23,497
17 Apr 2038
64
90th
24,031
03 Oct 2039
65
91st
24,571
26 Mar 2041
67
92nd
25,117
23 Sep 2042
68
93rd
25,669
28 Mar 2044
70
94th
26,227
07 Oct 2045
71
95th
26,791
24 Apr 2047
73
96th
27,361
14 Nov 2048
74
97th
27,937
13 Jun 2050
76