Every Day Counts
Hexagonal Days
 
Age: 17,559 days
Date of birth
Your 78th Hexagonal Day is on
Saturday
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
30 Jun 2018
17,571
12
48
05 Jul 2018
17,576
17
48
07 Jul 2018
17,578
19
48
26 Oct 2018
17,689
130
48
17 Nov 2018
17,711
152
48
07 Mar 2019
17,821
262
48
02 Sep 2019
18,000
441
49
21 Sep 2019
18,019
460
49
28 Oct 2019
18,056
497
49
25 Mar 2031
22,222
4,663
60
06 Oct 2033
23,148
5,589
63
03 Sep 2036
24,211
6,652
66
07 Feb 2060
32,768
15,209
89
11 Feb 2119
54,321
36,762
148
Ordinal
Day Age
Date
Age
77th
17,557
16 Jun 2018
48
78th
18,019
21 Sep 2019
49
1
79th
18,487
01 Jan 2021
50
80th
18,961
20 Apr 2022
51
81st
19,441
13 Aug 2023
53
82nd
19,927
11 Dec 2024
54
83rd
20,419
17 Apr 2026
55
84th
20,917
28 Aug 2027
57
85th
21,421
13 Jan 2029
58
86th
21,931
07 Jun 2030
60
87th
22,447
05 Nov 2031
61
88th
22,969
10 Apr 2033
62
89th
23,497
20 Sep 2034
64
90th
24,031
07 Mar 2036
65
91st
24,571
29 Aug 2037
67
92nd
25,117
26 Feb 2039
68
93rd
25,669
31 Aug 2040
70
94th
26,227
12 Mar 2042
71
95th
26,791
27 Sep 2043
73
96th
27,361
19 Apr 2045
74