Every Day Counts
Hexagonal Days
 
Age: 13,046 days
Date of birth
Your 67th Hexagonal Day is on
Saturday
when you will be
13,267 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
10 Oct 2018
13,131
85
35
12 Dec 2018
13,194
148
36
21 Dec 2018
13,203
157
36
12 Jan 2019
13,225
179
36
23 Feb 2019
13,267
221
36
20 Nov 2019
13,537
491
37
02 Sep 2020
13,824
778
37
25 Feb 2021
14,000
954
38
13 Dec 2024
15,387
2,341
42
06 Sep 2027
16,384
3,338
44
25 Apr 2031
17,711
4,665
48
31 Aug 2043
22,222
9,176
60
14 Mar 2046
23,148
10,102
63
20 Jul 2131
54,321
41,275
148
Ordinal
Day Age
Date
Age
66th
12,871
23 Jan 2018
35
67th
13,267
23 Feb 2019
36
1
68th
13,669
31 Mar 2020
37
69th
14,077
13 May 2021
38
70th
14,491
01 Jul 2022
39
71st
14,911
25 Aug 2023
40
72nd
15,337
24 Oct 2024
41
73rd
15,769
30 Dec 2025
43
74th
16,207
13 Mar 2027
44
75th
16,651
30 May 2028
45
76th
17,101
23 Aug 2029
46
77th
17,557
22 Nov 2030
48
78th
18,019
27 Feb 2032
49
79th
18,487
09 Jun 2033
50
80th
18,961
26 Sep 2034
51
81st
19,441
19 Jan 2036
53
82nd
19,927
19 May 2037
54
83rd
20,419
23 Sep 2038
55
84th
20,917
03 Feb 2040
57
85th
21,421
21 Jun 2041
58