Every Day Counts
Hexagonal Days
 
Age: 8,910 days
Date of birth
Your 55th Hexagonal Day is on
Sunday
when you will be
8,911 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
21 Jan 2018
8,911
tomorrow
24
21 Jan 2018
8,911
tomorrow
24
18 Apr 2018
8,998
88
24
20 Apr 2018
9,000
90
24
15 May 2018
9,025
115
24
18 May 2018
9,028
118
24
06 Jan 2019
9,261
351
25
16 Apr 2019
9,361
451
25
13 Jan 2021
9,999
1,089
27
18 Aug 2023
10,946
2,036
29
07 May 2025
11,574
2,664
31
17 Jun 2027
12,345
3,435
33
15 Oct 2035
15,387
6,477
42
08 Jul 2038
16,384
7,474
44
Ordinal
Day Age
Date
Age
54th
8,587
03 Mar 2017
23
55th
8,911
21 Jan 2018
24
1
56th
9,241
17 Dec 2018
25
57th
9,577
18 Nov 2019
26
58th
9,919
25 Oct 2020
27
59th
10,267
08 Oct 2021
28
60th
10,621
27 Sep 2022
29
61st
10,981
22 Sep 2023
30
62nd
11,347
22 Sep 2024
31
63rd
11,719
29 Sep 2025
32
64th
12,097
12 Oct 2026
33
65th
12,481
31 Oct 2027
34
66th
12,871
24 Nov 2028
35
67th
13,267
25 Dec 2029
36
68th
13,669
31 Jan 2031
37
69th
14,077
14 Mar 2032
38
70th
14,491
02 May 2033
39
71st
14,911
26 Jun 2034
40
72nd
15,337
26 Aug 2035
41
73rd
15,769
31 Oct 2036
43