Born: 17 Jul 1949
Geezer Butler
Bassist (Black Sabbath)
27,831 days old
He will celebrate his 41st Martian Birthday on 29 August 2026 aged 28,167 days.
On Mars birthdays occur nearly every two years. Don't miss your next one!
Day age
Days ahead
Year age
Day age
Year age
40th
27,480
75
41st
28,167
77
42nd
28,854
78
43rd
29,541
80
44th
30,228
82
45th
30,915
84
46th
31,602
86
47th
32,289
88
48th
32,976
90
49th
33,663
92
50th
34,350
94
51st
35,037
95
52nd
35,724
97
53rd
36,411
99
54th
37,098
101
55th
37,785
103
56th
38,472
105
57th
39,159
107
58th
39,846
109
59th
40,533
110
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