Every Day Counts
Hexagonal Days
 
Age: 20,912 days
Date of birth
Your 84th Hexagonal Day is on
Thursday
when you will be
20,917 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
09 Dec 2021
20,917
5
57
02 Mar 2022
21,000
88
57
14 Mar 2022
21,012
100
57
27 Mar 2022
21,025
113
57
25 Jun 2022
21,115
203
57
29 Oct 2022
21,241
329
58
12 Aug 2023
21,528
616
58
09 Oct 2024
21,952
1,040
60
06 Jul 2025
22,222
1,310
60
18 Jan 2028
23,148
2,236
63
16 Dec 2030
24,211
3,299
66
17 Feb 2043
28,657
7,745
78
21 May 2054
32,768
11,856
89
25 May 2113
54,321
33,409
148
Ordinal
Day Age
Date
Age
83rd
20,419
29 Jul 2020
55
84th
20,917
09 Dec 2021
57
1
85th
21,421
27 Apr 2023
58
86th
21,931
18 Sep 2024
60
87th
22,447
16 Feb 2026
61
88th
22,969
23 Jul 2027
62
89th
23,497
01 Jan 2029
64
90th
24,031
19 Jun 2030
65
91st
24,571
11 Dec 2031
67
92nd
25,117
09 Jun 2033
68
93rd
25,669
13 Dec 2034
70
94th
26,227
23 Jun 2036
71
95th
26,791
08 Jan 2038
73
96th
27,361
01 Aug 2039
74
97th
27,937
27 Feb 2041
76
98th
28,519
02 Oct 2042
78
99th
29,107
12 May 2044
79
100th
29,701
27 Dec 2045
81
101st
30,301
19 Aug 2047
82
102nd
30,907
16 Apr 2049
84