1)
When will the commoners bow there?
1.
Rashi: The entire day.
2)
What is special about Shabbos and Yom Tov?
1.
Rashi: The gate will be open the entire day for people to bow ? "v'Hayah Midei Chodesh b'Chadsho u'Midei Shabbos b'Shabato Yavo Chol Basar Lehishtachavos Lefanai Amar Hashem" (Yeshayah 66:23).