Every Day Counts
Hexagonal Days
 
Age: 20,949 days
Date of birth
Your 85th Hexagonal Day is on
Monday
when you will be
21,421 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 Aug 2021
21,000
51
57
27 Aug 2021
21,012
63
57
09 Sep 2021
21,025
76
57
08 Dec 2021
21,115
166
57
13 Apr 2022
21,241
292
58
10 Oct 2022
21,421
472
58
25 Jan 2023
21,528
579
58
24 Mar 2024
21,952
1,003
60
19 Dec 2024
22,222
1,273
60
03 Jul 2027
23,148
2,199
63
31 May 2030
24,211
3,262
66
02 Aug 2042
28,657
7,708
78
03 Nov 2053
32,768
11,819
89
07 Nov 2112
54,321
33,372
148
Ordinal
Day Age
Date
Age
84th
20,917
24 May 2021
57
85th
21,421
10 Oct 2022
58
1
86th
21,931
03 Mar 2024
60
87th
22,447
01 Aug 2025
61
88th
22,969
05 Jan 2027
62
89th
23,497
16 Jun 2028
64
90th
24,031
02 Dec 2029
65
91st
24,571
26 May 2031
67
92nd
25,117
22 Nov 2032
68
93rd
25,669
28 May 2034
70
94th
26,227
07 Dec 2035
71
95th
26,791
23 Jun 2037
73
96th
27,361
14 Jan 2039
74
97th
27,937
12 Aug 2040
76
98th
28,519
17 Mar 2042
78
99th
29,107
26 Oct 2043
79
100th
29,701
11 Jun 2045
81
101st
30,301
01 Feb 2047
82
102nd
30,907
29 Sep 2048
84
103rd
31,519
03 Jun 2050
86