For baby boy, you’d better have sex no more than 24 hours before ovulation and no more than 12 hours after that. According to Chinese Gender Chart, if your first day of last period is during Chinese lunar August (Sep 20 - Oct 19 in Gregorian Calendar) in 2017, you could get baby boy. So, try after that period on your ovulation date is best.
For baby boy, you’d better have sex no more than 24 hours before ovulation and no more than 12 hours after that. According to Chinese Gender Chart, if your first day of last period is during Chinese lunar August (Sep 20 - Oct 19 in Gregorian Calendar) in 2017, you could get baby boy. So, try after that period on your ovulation date is best.