The Morning Prayer [may be recited] until midday. R’ Yehudah says: Until four hours [into the day]. The Minchah Prayer [may be recited] until evening. R’ Yehudah says: Until plag haminchah. The Evening Prayer has no set [time]. And the Mussaf Prayer [may be recited] the entire day. R’ Yehudah says: Until seven hours [into the day].