Q: I have always been taught not to call someone at home prior to 9:00am nor after 9:00pm. Is this correct? What is the rule of etiquette in phoning someone at home?
A: 9 p.m. is the guideline to use if you do not know for a fact that it is okay to call later. If you know your friend always stays up until after 10 and doesn’t mind calls then go ahead.