Rashi seems to imply that if someone didn't come 'last night' he is considered a new face even if he was there two days ago - this is probably not the case though...
S, UK
Dear S,
The Meiri learns Rashi like you! It's Panim Chadasho if he wasn't there yesterday, even if he was there before!
Actually, the Ritva has a Girsa in Rashi "Lo Hayu Sham Kodem la'Chen - he wasn't there previously (at all).
Obviously this is Rashi's Shitah and not l'Halachah.
All the best,
Reuven Weiner