Every Day Counts
Hexagonal Days
 
Age: 17,162 days
Date of birth
Your 77th Hexagonal Day is on
Saturday
when you will be
17,557 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
24 Aug 2018
17,171
9
47
26 Aug 2018
17,173
11
47
27 Sep 2018
17,205
43
47
02 Mar 2019
17,361
199
47
04 May 2019
17,424
262
47
14 Sep 2019
17,557
395
48
03 Oct 2019
17,576
414
48
15 Feb 2020
17,711
549
48
30 Nov 2020
18,000
838
49
22 Jun 2032
22,222
5,060
60
04 Jan 2035
23,148
5,986
63
02 Dec 2037
24,211
7,049
66
07 May 2061
32,768
15,606
89
11 May 2120
54,321
37,159
148
Ordinal
Day Age
Date
Age
76th
17,101
15 Jun 2018
46
77th
17,557
14 Sep 2019
48
1
78th
18,019
19 Dec 2020
49
79th
18,487
01 Apr 2022
50
80th
18,961
19 Jul 2023
51
81st
19,441
10 Nov 2024
53
82nd
19,927
11 Mar 2026
54
83rd
20,419
16 Jul 2027
55
84th
20,917
25 Nov 2028
57
85th
21,421
13 Apr 2030
58
86th
21,931
05 Sep 2031
60
87th
22,447
02 Feb 2033
61
88th
22,969
09 Jul 2034
62
89th
23,497
19 Dec 2035
64
90th
24,031
05 Jun 2037
65
91st
24,571
27 Nov 2038
67
92nd
25,117
26 May 2040
68
93rd
25,669
29 Nov 2041
70
94th
26,227
10 Jun 2043
71
95th
26,791
25 Dec 2044
73