Every Day Counts
Zeisel Days
 
Age: 15,381 days
Date of birth
Your 7th Zeisel Day is on
Sunday
when you will be
15,387 days old

A Zeisel Day occurs when your day age is a Zeisel number.

A Zeisel number, named after Helmut Zeisel, is a square-free integer k with at least three prime factors which fall into the pattern

px = apx - 1 + b

where a and b are some integer constants and x is the index number of each prime factor in the factorization, sorted from lowest to highest.

Who would not want to celebrate that?

Remind me, please


Next Main Events
Day Age
Event
Days Ahead
Year Age
01 Nov 2026
15,387
6
42
14 Nov 2026
15,400
19
42
04 Jan 2027
15,451
70
42
27 Jun 2027
15,625
244
42
27 Jun 2027
15,625
244
42
18 Nov 2027
15,769
388
43
10 Apr 2028
15,913
532
43
08 Jun 2028
15,972
591
43
06 Jul 2028
16,000
619
43
25 Jul 2029
16,384
1,003
44
13 Mar 2033
17,711
2,330
48
19 Jul 2045
22,222
6,841
60
31 Jan 2048
23,148
7,767
63
07 Jun 2133
54,321
38,940
148
Ordinal
Day Age
Date
Age
1st
105
29 Dec 1984
0
2nd
1,419
04 Aug 1988
3
3rd
1,729
10 Jun 1989
4
4th
1,885
13 Nov 1989
5
5th
4,505
15 Jan 1997
12
6th
5,719
13 May 2000
15
7th
15,387
01 Nov 2026
42
1
8th
24,211
29 Dec 2050
66
9th
25,085
21 May 2053
68
10th
27,559
28 Feb 2060
75
11th
31,929
15 Feb 2072
87
12th
54,205
11 Feb 2133
148