Six months each of 30 days would give 180 'religious calendar' days.
The exodus passover began with and on "the first day of the First Month for you, Israel" - 1 Abib when the first slither of the new moon became visible. Fourteen days later, passover was “KILLED on the fourteenth day of the month”.
So any days of any months could coincide or not with any days of the week.
And so would the first day of the Seventh Month, IF the Seventh Month had not started instead, independently of seasons and or years ON AND WITH the Seventh Day Sabbath OF THE LORD GOD!
Now
Leviticus 23:24 is clear and unambiguous,
Ye shall receive
SABBATH:-
memorial Ex.20:8 Dt.5:15;
-of-
blow-of-trumpet Ex.19:16-20; 20:8,16;
holy-convocation Gn.3:8; 1:2,3;
no
servile work cf. Ex.20:10;
offering by fire offered the LORD Gn.3:21
---all attributes of "The day The Seventh Day Sabbath OF THE LORD your GOD".
All right.
Now, we know that Israel came up and out of Egypt on the Seventh Day Sabbath of the LORD, the Seventh Day having been made Law in the Fourth of the Ten Commandments just after the exodus. And we know Israel came up out of the Red Sea and was "planted" on Promised shore "the third day" of "three days thick darkness".
So if "the third day" was the Sabbath, the second day of the three days was the day before the Sabbath, the Sixth Day of the week when "that which remained" of the passover was "burned with fire or INTERRED; and that brought the day before, "the first day (of the 'three days') they KILLED the passover", on the Fifth Day of the week (Thursday).
We also know - it is Written, the passover was killed "on the fourteenth day of the First Month".
We now can draw up the passover calendar which says, "This is the First Month for you", Israel, and extend it to the Seventh Month.
Will we get 180 days at the end of the first six months of the year for Israel?