Xiao Ming forgot what day it was today, so he asked O, P, and Q. O replied I also forgot what day it is today, but you can ask P and Q both. P replied Yesterday It's the day when I lied. Q's answer is the same as P. It is known that 1.O never lied; 2.P lied on Monday, Tuesday, and Wednesday, and told the truth the rest of the time; 3.Q on Thursday, Friday, and Saturday Lie for three days and tell the truth the rest of the time.
today?
Thursday