Every Day Counts
Hexagonal Days
 
Age: 12,991 days
Date of birth
Your 67th Hexagonal Day is on
Friday
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
21 Oct 2018
12,996
5
35
25 Oct 2018
13,000
9
35
25 Nov 2018
13,031
40
35
05 Dec 2018
13,041
50
35
07 May 2019
13,194
203
36
19 Jul 2019
13,267
276
36
14 Apr 2020
13,537
546
37
26 Jan 2021
13,824
833
37
08 May 2025
15,387
2,396
42
30 Jan 2028
16,384
3,393
44
18 Sep 2031
17,711
4,720
48
24 Jan 2044
22,222
9,231
60
07 Aug 2046
23,148
10,157
63
13 Dec 2131
54,321
41,330
148
Ordinal
Day Age
Date
Age
66th
12,871
18 Jun 2018
35
67th
13,267
19 Jul 2019
36
1
68th
13,669
24 Aug 2020
37
69th
14,077
06 Oct 2021
38
70th
14,491
24 Nov 2022
39
71st
14,911
18 Jan 2024
40
72nd
15,337
19 Mar 2025
41
73rd
15,769
25 May 2026
43
74th
16,207
06 Aug 2027
44
75th
16,651
23 Oct 2028
45
76th
17,101
16 Jan 2030
46
77th
17,557
17 Apr 2031
48
78th
18,019
22 Jul 2032
49
79th
18,487
02 Nov 2033
50
80th
18,961
19 Feb 2035
51
81st
19,441
13 Jun 2036
53
82nd
19,927
12 Oct 2037
54
83rd
20,419
16 Feb 2039
55
84th
20,917
28 Jun 2040
57
85th
21,421
14 Nov 2041
58