Every Day Counts
Hexagonal Days
 
Age: 16,254 days
Date of birth
Your 75th Hexagonal Day is on
Monday
when you will be
16,651 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
22 Aug 2018
16,261
7
44
20 Sep 2018
16,290
36
44
23 Dec 2018
16,384
130
44
23 Dec 2018
16,384
130
44
25 May 2019
16,537
283
45
16 Sep 2019
16,651
397
45
02 Oct 2019
16,667
413
45
30 Aug 2020
17,000
746
46
29 Mar 2022
17,576
1,322
48
11 Aug 2022
17,711
1,457
48
17 Dec 2034
22,222
5,968
60
30 Jun 2037
23,148
6,894
63
28 May 2040
24,211
7,957
66
05 Nov 2122
54,321
38,067
148
Ordinal
Day Age
Date
Age
74th
16,207
29 Jun 2018
44
75th
16,651
16 Sep 2019
45
1
76th
17,101
09 Dec 2020
46
77th
17,557
10 Mar 2022
48
78th
18,019
15 Jun 2023
49
79th
18,487
25 Sep 2024
50
80th
18,961
12 Jan 2026
51
81st
19,441
07 May 2027
53
82nd
19,927
04 Sep 2028
54
83rd
20,419
09 Jan 2030
55
84th
20,917
22 May 2031
57
85th
21,421
07 Oct 2032
58
86th
21,931
01 Mar 2034
60
87th
22,447
30 Jul 2035
61
88th
22,969
02 Jan 2037
62
89th
23,497
14 Jun 2038
64
90th
24,031
30 Nov 2039
65
91st
24,571
23 May 2041
67
92nd
25,117
20 Nov 2042
68
93rd
25,669
25 May 2044
70