Related for Berakhot 20:18

King Hezekiah decided four things, and his decision was in accordance with the will of the Omnipresent God. He hid the Book of Healing, and his decision was in accordance with the will of the Omnipresent God. He broke apart the copper snake, and his decision was in accordance with the will of the Omnipresent God [as it says in II Kings 18:4, “Until those days, the children of Israel had been burning incense to it, and it was called Nekhushatan (‘the snake god’)”]. He removed the shrines and altars, and his decision was in accordance with the will of the Omnipresent God, as it says (II Chronicles 32:12), “Hezekiah removed His shrines and His altars and spoke to Judah and Jerusalem, and said: Will you bow down before one altar, and burn incense upon it?” He stopped up the waters of Gihon, and his decision was in accordance with the will of the Omnipresent God, as it says (II Chronicles 32:30), “Hezekiah stopped up the spring of the waters of [upper] Gihon, leading it downward, west of the City of David. And Hezekiah was successful in all that he did.”

Just like the Torah established a set time to read the Shema, so too the Sages established a set time for [the] prayer [of Shemoneh Esreh]. Why did they say [that] the morning prayer [of Shmoneh Esreh can be prayed only] until noon? Because the morning Tamid (daily offering) [sacrifice] could be brought [only] until noon. Rebbi Yehudah says, “[The morning prayer of Shmoneh Esreh can be prayed only] until [the end of the first] four hours [of the day].” And why did they say that the Mincha (afternoon) prayer [of Shemoneh Esreh can only be prayed] until the evening? Because the afternoon Tamid [sacrifice] could be brought [only] until the evening. Rebbi Yehudah says, “[The Mincha prayer of Shmoneh Esreh can be prayed only] until Plag Hamincha.” And when is Plag Hamincha? Eleven minus one quarter hours [of the day] (i.e. 10 ¾ hours). And why did they say that the evening prayer [of Shmoneh Esreh] does not have a set time? Because the limbs and fats [of the sacrifices] could be brought the whole night. And why did they say that the Mussaf prayer [of Shmoneh Esreh can be prayed] the whole day? Because the Mussaf (additional offering) sacrifice could be brought the whole day. Rebbi Yehudah says, “[The Mussaf prayer can be prayed] until [the end of the first] seven hours [of the day].”