In 2019 you will get a baby boy if you wife is conceived in the following periods:
Aug 30 - Sep 28 (27 lunar years old, 8th lunar month)
Sep 29 - Oct 27 (27 lunar years old, 9th lunar month)
Oct 28 - Nov 25 (27 lunar years old, 10th lunar month)
Dec 26 - Dec 31 (27 lunar years old, 12th lunar month)
In 2020 you will get a baby boy if your wife is conceived in the following periods:
Jan 1 - Jan 24 (27 lunar years old, 12th lunar month)
Jan 25 - Feb 22 (28 lunar years old, 1st lunar month)
Mar 24 - Apr 22 (28 lunar years old, 3rd lunar month)
Aug 19 - Sep 16 (28 lunar years old, 7th lunar month)
Sep 17 - Oct 16 (28 lunar years old, 8th lunar month)
Oct 17 - Nov 14 (28 lunar years old, 9th lunar month)
Nov 15 - Dec 14 (28 lunar years old, 10th lunar month)
In 2019 you will get a baby boy if you wife is conceived in the following periods:
Aug 30 - Sep 28 (27 lunar years old, 8th lunar month)
Sep 29 - Oct 27 (27 lunar years old, 9th lunar month)
Oct 28 - Nov 25 (27 lunar years old, 10th lunar month)
Dec 26 - Dec 31 (27 lunar years old, 12th lunar month)
In 2020 you will get a baby boy if your wife is conceived in the following periods:
Jan 1 - Jan 24 (27 lunar years old, 12th lunar month)
Jan 25 - Feb 22 (28 lunar years old, 1st lunar month)
Mar 24 - Apr 22 (28 lunar years old, 3rd lunar month)
Aug 19 - Sep 16 (28 lunar years old, 7th lunar month)
Sep 17 - Oct 16 (28 lunar years old, 8th lunar month)
Oct 17 - Nov 14 (28 lunar years old, 9th lunar month)
Nov 15 - Dec 14 (28 lunar years old, 10th lunar month)
Here are more ways for you to conceive baby boy:
https://www.yourchineseastrology.com/ways-to-get-baby-boy.htm