Every Day Counts
Zeisel Days
 
Age: 24,200 days
Date of birth
Your 8th Zeisel Day is on
Monday
when you will be
24,211 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
19 Jan 2026
24,211
11
66
19 Feb 2026
24,242
42
66
24 Apr 2026
24,306
106
66
28 Apr 2026
24,310
110
66
24 May 2026
24,336
136
66
16 Jul 2026
24,389
189
66
14 Jan 2027
24,571
371
67
08 Feb 2028
24,961
761
68
18 Mar 2028
25,000
800
68
23 Mar 2038
28,657
4,457
78
24 Jun 2049
32,768
8,568
89
10 Jan 2051
33,333
9,133
91
30 Oct 2054
34,722
10,522
95
28 Jun 2108
54,321
30,121
148
Ordinal
Day Age
Date
Age
1st
105
20 Jan 1960
0
2nd
1,419
26 Aug 1963
3
3rd
1,729
01 Jul 1964
4
4th
1,885
04 Dec 1964
5
5th
4,505
06 Feb 1972
12
6th
5,719
04 Jun 1975
15
7th
15,387
22 Nov 2001
42
8th
24,211
19 Jan 2026
66
1
9th
25,085
11 Jun 2028
68
10th
27,559
21 Mar 2035
75
11th
31,929
08 Mar 2047
87
12th
54,205
04 Mar 2108
148