So if I set Wednesday 20 or Thursday, November 27 is reasonable (to determine clearly the fastest, because I have to make an appointment with bangkachao already).
So if I set Wednesday, 20, or Wednesday November 27 will be appropriate (helping determine clearly as soon as possible because I need to take an appointment to Bangkachao.)
So, if I set on Wednesday 20 or Wednesday 27 November will be suitable (helps determine a clear, fast as I will need to do as an appointment with Bangkachao).