true
yes
Friday is the day before Saturday.
Friday or Saturday, depending on the time and locations
The day which comes after Friday is Saturday.
Friday
Saturday, from Friday sundown until Saturday after twilight.
no
Friday Saturday Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sunday
any night but Friday
any night but Friday
The day after Friday, is, of course, Saturday.
Saturday is the sabbath, or more precisely, the Jewish sabbath runs from sundown Friday evening to nightfall Saturday evening, including the twilight period both Friday and Saturday evenings.