Every Day Counts
Hexagonal Days
 
Age: 17,465 days
Date of birth
Your 77th Hexagonal Day is on
Tuesday
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
28 Apr 2019
17,471
6
47
23 Jul 2019
17,557
92
48
11 Aug 2019
17,576
111
48
13 Aug 2019
17,578
113
48
02 Dec 2019
17,689
224
48
24 Dec 2019
17,711
246
48
12 Apr 2020
17,821
356
48
08 Oct 2020
18,000
535
49
03 Dec 2020
18,056
591
49
30 Apr 2032
22,222
4,757
60
12 Nov 2034
23,148
5,683
63
10 Oct 2037
24,211
6,746
66
15 Mar 2061
32,768
15,303
89
19 Mar 2120
54,321
36,856
148
Ordinal
Day Age
Date
Age
76th
17,101
23 Apr 2018
46
77th
17,557
23 Jul 2019
48
1
78th
18,019
27 Oct 2020
49
79th
18,487
07 Feb 2022
50
80th
18,961
27 May 2023
51
81st
19,441
18 Sep 2024
53
82nd
19,927
17 Jan 2026
54
83rd
20,419
24 May 2027
55
84th
20,917
03 Oct 2028
57
85th
21,421
19 Feb 2030
58
86th
21,931
14 Jul 2031
60
87th
22,447
11 Dec 2032
61
88th
22,969
17 May 2034
62
89th
23,497
27 Oct 2035
64
90th
24,031
13 Apr 2037
65
91st
24,571
05 Oct 2038
67
92nd
25,117
03 Apr 2040
68
93rd
25,669
07 Oct 2041
70
94th
26,227
18 Apr 2043
71
95th
26,791
02 Nov 2044
73