The Day phase of a Mafia game is characterized as follows:
- The game thread is open.
- All players may post and vote in the game thread unless otherwise specified.
- Role-based abilities such as Cop and Doctor do not work unless otherwise specified.
- The Day ends at a deadline or when a majority of living players are voting for the same player, at which time that player is lynched.
- Private communication between players, including but not limited to personal messages and factional chat, is not allowed unless otherwise specified.
The Day phase follows the Night phase and is usually the phase during which games begin.
Note that to prevent ambiguity, the 'D' in Day is capitalized in order to differentiate it from the 24-hour unit of time "day".
"Day" can also refer to a role modifier that specifies that actions occur during the Day.