English of Core Text: “Second day” — second to the creation of the world, but not the second of the week, for we do not find a reckoning of the week from the Torah.
On the daf / in context: The Yerushalmi clarifies that the ordinal “second” is relative to the creation sequence, not an independent weekly calendar count that begins from a Torah-mandated starting point.
Type of Learning: Custom (ordinal of creation vs. weekly count)What Is Learned: The Torah’s “day two” is counted from the beginning of creation, not from a weekly cycle whose origin is stated in the Torah.