Every Day Counts
Hexagonal Days
 
Age: 16,774 days
Date of birth
Your 76th Hexagonal Day is on
Tuesday
when you will be
17,101 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 Nov 2018
16,836
62
46
16 Dec 2018
16,861
87
46
24 Jan 2019
16,900
126
46
04 May 2019
17,000
226
46
13 Aug 2019
17,101
327
46
24 Oct 2019
17,173
399
47
29 Apr 2020
17,361
587
47
30 Nov 2020
17,576
802
48
14 Apr 2021
17,711
937
48
20 Aug 2033
22,222
5,448
60
03 Mar 2036
23,148
6,374
63
30 Jan 2039
24,211
7,437
66
05 Jul 2062
32,768
15,994
89
09 Jul 2121
54,321
37,547
148
Ordinal
Day Age
Date
Age
75th
16,651
20 May 2018
45
76th
17,101
13 Aug 2019
46
1
77th
17,557
11 Nov 2020
48
78th
18,019
16 Feb 2022
49
79th
18,487
30 May 2023
50
80th
18,961
15 Sep 2024
51
81st
19,441
08 Jan 2026
53
82nd
19,927
09 May 2027
54
83rd
20,419
12 Sep 2028
55
84th
20,917
23 Jan 2030
57
85th
21,421
11 Jun 2031
58
86th
21,931
02 Nov 2032
60
87th
22,447
02 Apr 2034
61
88th
22,969
06 Sep 2035
62
89th
23,497
15 Feb 2037
64
90th
24,031
03 Aug 2038
65
91st
24,571
25 Jan 2040
67
92nd
25,117
24 Jul 2041
68
93rd
25,669
27 Jan 2043
70
94th
26,227
07 Aug 2044
71