Every Day Counts
Hexagonal Days
 
Age: 18,484 days
Date of birth
Your 79th Hexagonal Day is on
Sunday
when you will be
18,487 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
28 Feb 2021
18,487
3
50
09 Mar 2021
18,496
12
50
10 Apr 2021
18,528
44
50
02 Jun 2021
18,581
97
50
18 Nov 2021
18,750
266
51
26 Jul 2022
19,000
516
52
26 Dec 2022
19,153
669
52
08 Jun 2024
19,683
1,199
53
22 May 2031
22,222
3,738
60
03 Dec 2033
23,148
4,664
63
31 Oct 2036
24,211
5,727
66
02 Jan 2049
28,657
10,173
78
05 Apr 2060
32,768
14,284
89
10 Apr 2119
54,321
35,837
148
Ordinal
Day Age
Date
Age
78th
18,019
18 Nov 2019
49
79th
18,487
28 Feb 2021
50
1
80th
18,961
17 Jun 2022
51
81st
19,441
10 Oct 2023
53
82nd
19,927
07 Feb 2025
54
83rd
20,419
14 Jun 2026
55
84th
20,917
25 Oct 2027
57
85th
21,421
12 Mar 2029
58
86th
21,931
04 Aug 2030
60
87th
22,447
02 Jan 2032
61
88th
22,969
07 Jun 2033
62
89th
23,497
17 Nov 2034
64
90th
24,031
04 May 2036
65
91st
24,571
26 Oct 2037
67
92nd
25,117
25 Apr 2039
68
93rd
25,669
28 Oct 2040
70
94th
26,227
09 May 2042
71
95th
26,791
24 Nov 2043
73
96th
27,361
16 Jun 2045
74
97th
27,937
13 Jan 2047
76