RORY: Feels like we’ve been gone a long time.
LORELAI: You know what’s weird? Every time I leave town, even for just a little while, I always expect everything to look different.
RORY: And it never does.
LORELAI: It never does.
Lorelai and Rory were in Portsmouth for Monday and Tuesday night, so today is Wednesday and they’ve been gone for two or three days.
Their dialogue is a comment on the unchanging timelessness of Stars Hollow, providing a stable base for Lorelai and Rory.
The Annotated Gilmore Girls 