Every Day Counts
Hexagonal Days
 
Age: 18,551 days
Date of birth
Your 80th Hexagonal Day is on
Friday
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
16 Jan 2019
18,581
30
50
05 Jun 2019
18,721
170
51
04 Jul 2019
18,750
199
51
23 Jul 2019
18,769
218
51
31 Jan 2020
18,961
410
51
10 Mar 2020
19,000
449
52
10 Aug 2020
19,153
602
52
22 Jan 2022
19,683
1,132
53
04 Jan 2029
22,222
3,671
60
19 Jul 2031
23,148
4,597
63
16 Jun 2034
24,211
5,660
66
18 Aug 2046
28,657
10,106
78
19 Nov 2057
32,768
14,217
89
23 Nov 2116
54,321
35,770
148
Ordinal
Day Age
Date
Age
79th
18,487
14 Oct 2018
50
80th
18,961
31 Jan 2020
51
1
81st
19,441
25 May 2021
53
82nd
19,927
23 Sep 2022
54
83rd
20,419
28 Jan 2024
55
84th
20,917
09 Jun 2025
57
85th
21,421
26 Oct 2026
58
86th
21,931
19 Mar 2028
60
87th
22,447
17 Aug 2029
61
88th
22,969
21 Jan 2031
62
89th
23,497
02 Jul 2032
64
90th
24,031
18 Dec 2033
65
91st
24,571
11 Jun 2035
67
92nd
25,117
08 Dec 2036
68
93rd
25,669
13 Jun 2038
70
94th
26,227
23 Dec 2039
71
95th
26,791
09 Jul 2041
73
96th
27,361
30 Jan 2043
74
97th
27,937
28 Aug 2044
76
98th
28,519
02 Apr 2046
78