4 Pillars (四柱命理), Date Selection (擇日), Plum Blossom Divination (梅花易数)

Date for Surgery (FiveArts)

https://fivearts.info/fivearts/index.php?topic=14099.0

In my opinion, first see bazi or zwds see if year/ month is ok or bad before you proceed with date selection. Once decided the date. Pray then cast a divinaiton to see ok to proceed or not. Its a macro to micro approach.