Every Day Counts
Hexagonal Days
 
Age: 18,017 days
Date of birth
Your 78th Hexagonal Day is on
Thursday
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
25 Jan 2018
18,019
2
49
03 Mar 2018
18,056
39
49
28 Mar 2018
18,081
64
49
31 May 2018
18,145
128
49
19 Aug 2018
18,225
208
49
02 May 2019
18,481
464
50
02 Oct 2020
19,000
983
52
16 Aug 2022
19,683
1,666
53
29 Jul 2029
22,222
4,205
60
10 Feb 2032
23,148
5,131
63
08 Jan 2035
24,211
6,194
66
12 Mar 2047
28,657
10,640
78
13 Jun 2058
32,768
14,751
89
17 Jun 2117
54,321
36,304
148
Ordinal
Day Age
Date
Age
77th
17,557
20 Oct 2016
48
78th
18,019
25 Jan 2018
49
1
79th
18,487
08 May 2019
50
80th
18,961
24 Aug 2020
51
81st
19,441
17 Dec 2021
53
82nd
19,927
17 Apr 2023
54
83rd
20,419
21 Aug 2024
55
84th
20,917
01 Jan 2026
57
85th
21,421
20 May 2027
58
86th
21,931
11 Oct 2028
60
87th
22,447
11 Mar 2030
61
88th
22,969
15 Aug 2031
62
89th
23,497
24 Jan 2033
64
90th
24,031
12 Jul 2034
65
91st
24,571
03 Jan 2036
67
92nd
25,117
02 Jul 2037
68
93rd
25,669
05 Jan 2039
70
94th
26,227
16 Jul 2040
71
95th
26,791
31 Jan 2042
73
96th
27,361
24 Aug 2043
74