Also see: Shebo-Shebetot / Pentacontad
MMT A (4Q394 1-2)
On the seventh of the sixth (month): sabbath.
On the fourteenth of it: sabbath.
On the twenty-first] V of it: sabbath.
On the twenty-second of it: Feast of Oil, fir[st of sab]bath (Sunday). Af[terwards]: offe[ring of Wood].
The 7 biblical Shebo-Shebetôt (pentacontads):
# Feast of First Fruits Biblical Month Gregorian Month Biblical Date
1 Barley; Waving of Sheaf 1st biblical month Apr 1/26
2 Wheat; “Weeks” 3rd biblical month May 1/26 + 50 = 3/15
3 New Wine / Pentecost 5th biblical month July-Aug 3/15 + 50 = 5/3
4 Oil & Wood 6th biblical month Sept 5/3 + 50 = 6/22
5 (…) 8th biblical month Oct-Nov 6/22 + 50 = 8/10
6 (…) 9th biblical month Dec 8/10 + 50 = 9/29
7 (…) 11th bibl. month Feb 9/29 + 50 = 11/17
(49 days + 49 days + 49 days + 49 days + 49 days + 49 days + 70 days = 364 days)
(7 x 7) x 7 + (3 x 7) = 364 days