1)
What are the ramifications of the phrase, "u'va'Yom ha'Shevi'i Chag La'Hashem"?
1.
Ramban: Since "Chag" has connotations of 'Chagigah,' the Torah is informing us here that the seventh day of Pesach is the last day on which one may bring his Korban Chagigah. 1 As far as the Dinim of Yom-Tov is concerned, however, they are both equal - since they are both called "Mikra Kodesh." 2
2)
What is the significance of the seventh day? Why is it a Yom-Tov?