Translation:Mishnah/Seder Zeraim/Tractate Berakhot/Chapter 4/1/Translation

Shacharit can be said until midday
Rabbi Yehudah says until four hours into the day.
Mincha can be said until the evening.
Rabbi Yehudah says until the middle of the afternoon.
Ma'ariv has no set time.
Musaf can be said all day.
Rabbi Yehudah says only until seven hours into the day.