Every Day Counts
Hexagonal Days
 
Age: 19,440 days
Date of birth
Your 81st Hexagonal Day is on
Monday
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
22 Oct 2018
19,441
tomorrow
53
25 Oct 2018
19,444
4
53
11 Dec 2018
19,491
51
53
23 Dec 2018
19,503
63
53
30 Mar 2019
19,600
160
53
21 Jun 2019
19,683
243
53
22 Nov 2019
19,837
397
54
03 May 2020
20,000
560
54
03 Jun 2026
22,222
2,782
60
15 Dec 2028
23,148
3,708
63
13 Nov 2031
24,211
4,771
66
15 Jan 2044
28,657
9,217
78
18 Apr 2055
32,768
13,328
89
22 Apr 2114
54,321
34,881
148
Ordinal
Day Age
Date
Age
80th
18,961
29 Jun 2017
51
81st
19,441
22 Oct 2018
53
1
82nd
19,927
20 Feb 2020
54
83rd
20,419
26 Jun 2021
55
84th
20,917
06 Nov 2022
57
85th
21,421
24 Mar 2024
58
86th
21,931
16 Aug 2025
60
87th
22,447
14 Jan 2027
61
88th
22,969
19 Jun 2028
62
89th
23,497
29 Nov 2029
64
90th
24,031
17 May 2031
65
91st
24,571
07 Nov 2032
67
92nd
25,117
07 May 2034
68
93rd
25,669
10 Nov 2035
70
94th
26,227
21 May 2037
71
95th
26,791
06 Dec 2038
73
96th
27,361
28 Jun 2040
74
97th
27,937
25 Jan 2042
76
98th
28,519
30 Aug 2043
78
99th
29,107
09 Apr 2045
79