Every Day Counts
Hexagonal Days
 
Age: 18,287 days
Date of birth
Your 79th Hexagonal Day is on
Tuesday
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
17 May 2024
18,336
49
50
01 Jul 2024
18,381
94
50
09 Oct 2024
18,481
194
50
15 Oct 2024
18,487
200
50
24 Oct 2024
18,496
209
50
05 Jul 2025
18,750
463
51
12 Mar 2026
19,000
713
52
24 Jan 2028
19,683
1,396
53
06 Jan 2035
22,222
3,935
60
20 Jul 2037
23,148
4,861
63
17 Jun 2040
24,211
5,924
66
19 Aug 2052
28,657
10,370
78
21 Nov 2063
32,768
14,481
89
25 Nov 2122
54,321
36,034
148
Ordinal
Day Age
Date
Age
78th
18,019
05 Jul 2023
49
79th
18,487
15 Oct 2024
50
1
80th
18,961
01 Feb 2026
51
81st
19,441
27 May 2027
53
82nd
19,927
24 Sep 2028
54
83rd
20,419
29 Jan 2030
55
84th
20,917
11 Jun 2031
57
85th
21,421
27 Oct 2032
58
86th
21,931
21 Mar 2034
60
87th
22,447
19 Aug 2035
61
88th
22,969
22 Jan 2037
62
89th
23,497
04 Jul 2038
64
90th
24,031
20 Dec 2039
65
91st
24,571
12 Jun 2041
67
92nd
25,117
10 Dec 2042
68
93rd
25,669
14 Jun 2044
70
94th
26,227
24 Dec 2045
71
95th
26,791
11 Jul 2047
73
96th
27,361
31 Jan 2049
74
97th
27,937
30 Aug 2050
76