Every Day Counts
Hexagonal Days
 
Age: 19,030 days
Date of birth
Your 81st Hexagonal Day is on
Tuesday
when you will be
19,441 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
04 Oct 2018
19,044
14
52
20 Nov 2018
19,091
61
52
09 Dec 2018
19,110
80
52
21 Jan 2019
19,153
123
52
05 Nov 2019
19,441
411
53
08 Nov 2019
19,444
414
53
04 Jul 2020
19,683
653
53
17 May 2021
20,000
970
54
17 Jun 2027
22,222
3,192
60
29 Dec 2029
23,148
4,118
63
26 Nov 2032
24,211
5,181
66
28 Jan 2045
28,657
9,627
78
01 May 2056
32,768
13,738
89
06 May 2115
54,321
35,291
148
Ordinal
Day Age
Date
Age
80th
18,961
13 Jul 2018
51
81st
19,441
05 Nov 2019
53
1
82nd
19,927
05 Mar 2021
54
83rd
20,419
10 Jul 2022
55
84th
20,917
20 Nov 2023
57
85th
21,421
07 Apr 2025
58
86th
21,931
30 Aug 2026
60
87th
22,447
28 Jan 2028
61
88th
22,969
03 Jul 2029
62
89th
23,497
13 Dec 2030
64
90th
24,031
30 May 2032
65
91st
24,571
21 Nov 2033
67
92nd
25,117
21 May 2035
68
93rd
25,669
23 Nov 2036
70
94th
26,227
04 Jun 2038
71
95th
26,791
20 Dec 2039
73
96th
27,361
12 Jul 2041
74
97th
27,937
08 Feb 2043
76
98th
28,519
12 Sep 2044
78
99th
29,107
23 Apr 2046
79