Every Day Counts
Hexagonal Days
 
Age: 18,552 days
Date of birth
Your 80th Hexagonal Day is on
Thursday
when you will be
18,961 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
15 Jan 2019
18,581
29
50
04 Jun 2019
18,721
169
51
03 Jul 2019
18,750
198
51
22 Jul 2019
18,769
217
51
30 Jan 2020
18,961
409
51
09 Mar 2020
19,000
448
52
09 Aug 2020
19,153
601
52
21 Jan 2022
19,683
1,131
53
03 Jan 2029
22,222
3,670
60
18 Jul 2031
23,148
4,596
63
15 Jun 2034
24,211
5,659
66
17 Aug 2046
28,657
10,105
78
18 Nov 2057
32,768
14,216
89
22 Nov 2116
54,321
35,769
148
Ordinal
Day Age
Date
Age
79th
18,487
13 Oct 2018
50
80th
18,961
30 Jan 2020
51
1
81st
19,441
24 May 2021
53
82nd
19,927
22 Sep 2022
54
83rd
20,419
27 Jan 2024
55
84th
20,917
08 Jun 2025
57
85th
21,421
25 Oct 2026
58
86th
21,931
18 Mar 2028
60
87th
22,447
16 Aug 2029
61
88th
22,969
20 Jan 2031
62
89th
23,497
01 Jul 2032
64
90th
24,031
17 Dec 2033
65
91st
24,571
10 Jun 2035
67
92nd
25,117
07 Dec 2036
68
93rd
25,669
12 Jun 2038
70
94th
26,227
22 Dec 2039
71
95th
26,791
08 Jul 2041
73
96th
27,361
29 Jan 2043
74
97th
27,937
27 Aug 2044
76
98th
28,519
01 Apr 2046
78