Every Day Counts
Hexagonal Days
 
Age: 17,553 days
Date of birth
Your 77th Hexagonal Day is on
Thursday
when you will be
17,557 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
24 May 2018
17,557
4
48
07 Jun 2018
17,571
18
48
12 Jun 2018
17,576
23
48
14 Jun 2018
17,578
25
48
03 Oct 2018
17,689
136
48
25 Oct 2018
17,711
158
48
12 Feb 2019
17,821
268
48
10 Aug 2019
18,000
447
49
05 Oct 2019
18,056
503
49
02 Mar 2031
22,222
4,669
60
13 Sep 2033
23,148
5,595
63
11 Aug 2036
24,211
6,658
66
15 Jan 2060
32,768
15,215
89
19 Jan 2119
54,321
36,768
148
Ordinal
Day Age
Date
Age
76th
17,101
22 Feb 2017
46
77th
17,557
24 May 2018
48
1
78th
18,019
29 Aug 2019
49
79th
18,487
09 Dec 2020
50
80th
18,961
28 Mar 2022
51
81st
19,441
21 Jul 2023
53
82nd
19,927
18 Nov 2024
54
83rd
20,419
25 Mar 2026
55
84th
20,917
05 Aug 2027
57
85th
21,421
21 Dec 2028
58
86th
21,931
15 May 2030
60
87th
22,447
13 Oct 2031
61
88th
22,969
18 Mar 2033
62
89th
23,497
28 Aug 2034
64
90th
24,031
13 Feb 2036
65
91st
24,571
06 Aug 2037
67
92nd
25,117
03 Feb 2039
68
93rd
25,669
08 Aug 2040
70
94th
26,227
17 Feb 2042
71
95th
26,791
04 Sep 2043
73