This chart is believed to have been buried in a tomb near Beijing for almost 700 years and the original is now in the Beijing Institute of Science. By cross-referencing the month a child was conceived with the age of the mother at conception, the sex of the child may be determined. This chart has been proven to be 93% accurate.
According to this ancient data, your best chances for a boy occur when the mother conceives in July when she is 18, 20, 30, and 42. The best chances for a girl occur when the mother conceives in April when she is 21, 22, and 29. Also according to the study a boy is 54% more likely to be born.
Have Fun!
Shelly Wu
|
|
Month of Conception
|
Stats
|
|
J
|
F
|
M
|
A
|
M
|
J
|
J
|
A
|
S
|
O
|
N
|
D
|
F
|
M
|
|
A
G
E
A
T
C
O
N
C
E
P
T
I
O
N
|
18
|

|

|

|

|

|

|

|

|

|

|

|

|
17%
|
83%
|
|
19
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
20
|

|

|

|

|

|

|

|

|

|

|

|

|
25%
|
75%
|
|
21
|

|

|

|

|

|

|

|

|

|

|

|

|
92%
|
8%
|
|
22
|

|

|

|

|

|

|

|

|

|

|

|

|
67%
|
33%
|
|
23
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
24
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
25
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
26
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
27
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
28
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
29
|

|

|

|

|

|

|

|

|

|

|

|

|
67%
|
33%
|
|
30
|

|

|

|

|

|

|

|

|

|

|

|

|
17%
|
83%
|
|
31
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
32
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
33
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
34
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
35
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
36
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
37
|

|

|

|

|

|

|

|

|

|

|

|

|
58%
|
42%
|
|
38
|

|

|

|

|

|

|

|

|

|

|

|

|
58%
|
42%
|
|
39
|

|

|

|

|

|

|

|

|

|

|

|

|
58%
|
42%
|
|
40
|

|

|

|

|

|

|

|

|

|

|

|

|
42%
|
58%
|
|
41
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
42
|

|

|

|

|

|

|

|

|

|

|

|

|
33%
|
67%
|
|
43
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
44
|

|

|

|

|

|

|

|

|

|

|

|

|
50%
|
50%
|
|
45
|

|

|

|

|

|

|

|

|

|

|

|

|
58%
|
42%
|
|
|
F
|
43%
|
43%
|
50%
|
57%
|
43%
|
54%
|
36%
|
54%
|
54%
|
43%
|
54%
|
50%
|
46%
|
|
|
M
|
57%
|
57%
|
50%
|
43%
|
57%
|
46%
|
64%
|
46%
|
46%
|
57%
|
46%
|
50%
|
|
54%
|
|