Every Day Counts
Hexagonal Days
 
Age: 17,558 days
Date of birth
Your 78th Hexagonal Day is on
Monday
when you will be
18,019 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
05 Feb 2018
17,571
13
48
10 Feb 2018
17,576
18
48
12 Feb 2018
17,578
20
48
03 Jun 2018
17,689
131
48
25 Jun 2018
17,711
153
48
13 Oct 2018
17,821
263
48
10 Apr 2019
18,000
442
49
29 Apr 2019
18,019
461
49
05 Jun 2019
18,056
498
49
31 Oct 2030
22,222
4,664
60
14 May 2033
23,148
5,590
63
11 Apr 2036
24,211
6,653
66
15 Sep 2059
32,768
15,210
89
19 Sep 2118
54,321
36,763
148
Ordinal
Day Age
Date
Age
77th
17,557
22 Jan 2018
48
78th
18,019
29 Apr 2019
49
1
79th
18,487
09 Aug 2020
50
80th
18,961
26 Nov 2021
51
81st
19,441
21 Mar 2023
53
82nd
19,927
19 Jul 2024
54
83rd
20,419
23 Nov 2025
55
84th
20,917
05 Apr 2027
57
85th
21,421
21 Aug 2028
58
86th
21,931
13 Jan 2030
60
87th
22,447
13 Jun 2031
61
88th
22,969
16 Nov 2032
62
89th
23,497
28 Apr 2034
64
90th
24,031
14 Oct 2035
65
91st
24,571
06 Apr 2037
67
92nd
25,117
04 Oct 2038
68
93rd
25,669
08 Apr 2040
70
94th
26,227
18 Oct 2041
71
95th
26,791
05 May 2043
73
96th
27,361
25 Nov 2044
74