Every Day Counts
Hexagonal Days
 
Age: 21,155 days
Date of birth
Your 85th Hexagonal Day is on
Wednesday
when you will be
21,421 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
30 Jul 2020
21,212
57
58
28 Aug 2020
21,241
86
58
11 Nov 2020
21,316
161
58
16 Nov 2020
21,321
166
58
24 Feb 2021
21,421
266
58
11 Jun 2021
21,528
373
58
09 Aug 2022
21,952
797
60
26 Sep 2022
22,000
845
60
06 May 2023
22,222
1,067
60
17 Nov 2025
23,148
1,993
63
15 Oct 2028
24,211
3,056
66
17 Dec 2040
28,657
7,502
78
20 Mar 2052
32,768
11,613
89
25 Mar 2111
54,321
33,166
148
Ordinal
Day Age
Date
Age
84th
20,917
09 Oct 2019
57
85th
21,421
24 Feb 2021
58
1
86th
21,931
19 Jul 2022
60
87th
22,447
17 Dec 2023
61
88th
22,969
22 May 2025
62
89th
23,497
01 Nov 2026
64
90th
24,031
18 Apr 2028
65
91st
24,571
10 Oct 2029
67
92nd
25,117
09 Apr 2031
68
93rd
25,669
12 Oct 2032
70
94th
26,227
23 Apr 2034
71
95th
26,791
08 Nov 2035
73
96th
27,361
31 May 2037
74
97th
27,937
28 Dec 2038
76
98th
28,519
01 Aug 2040
78
99th
29,107
12 Mar 2042
79
100th
29,701
27 Oct 2043
81
101st
30,301
18 Jun 2045
82
102nd
30,907
14 Feb 2047
84
103rd
31,519
18 Oct 2048
86