Every Day Counts
Hexagonal Days
 
Age: 21,399 days
Date of birth
Your 85th Hexagonal Day is on
Friday
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
10 Apr 2024
21,412
13
58
19 Apr 2024
21,421
22
58
04 Aug 2024
21,528
129
58
04 Aug 2024
21,528
129
58
24 Oct 2024
21,609
210
59
02 Oct 2025
21,952
553
60
11 Oct 2025
21,961
562
60
19 Nov 2025
22,000
601
60
29 Jun 2026
22,222
823
60
10 Jan 2029
23,148
1,749
63
09 Dec 2031
24,211
2,812
66
10 Feb 2044
28,657
7,258
78
14 May 2055
32,768
11,369
89
18 May 2114
54,321
32,922
148
Ordinal
Day Age
Date
Age
84th
20,917
02 Dec 2022
57
85th
21,421
19 Apr 2024
58
1
86th
21,931
11 Sep 2025
60
87th
22,447
09 Feb 2027
61
88th
22,969
15 Jul 2028
62
89th
23,497
25 Dec 2029
64
90th
24,031
12 Jun 2031
65
91st
24,571
03 Dec 2032
67
92nd
25,117
02 Jun 2034
68
93rd
25,669
06 Dec 2035
70
94th
26,227
16 Jun 2037
71
95th
26,791
01 Jan 2039
73
96th
27,361
24 Jul 2040
74
97th
27,937
20 Feb 2042
76
98th
28,519
25 Sep 2043
78
99th
29,107
05 May 2045
79
100th
29,701
20 Dec 2046
81
101st
30,301
11 Aug 2048
82
102nd
30,907
09 Apr 2050
84
103rd
31,519
12 Dec 2051
86