There were numerous different kinds of manuscripts found at Betharaba, and numerous variants among like manuscripts. A full copy of 1 Enoch was found at Betharaba; but unfortunately is was sold to a private collector, and has yet to be released.
Why would you believe that these fragments were part of 1 Enoch; and if they are; why would you believe that they are a more correct variant?
How do you reconcile that manuscript with Jubilees?
JUBILEES 2
8 And on the fourth day He created the sun and the moon and the stars, and
set them in the firmament of the heaven, to give light upon all the earth, and to
rule over the day and the night, and divide the light from the darkness.
9 And YAHWEH appointed the
sun to be a great sign on the earth for days and
for Shabbats and
for months and for feasts and for years and for Shabbats of
years and for jubilees and for all seasons of the years
JUBILEES 6
36 For there will be those who will assuredly make observations of the moon-how it disturbs the seasons and comes in from year to year ten days too soon.
37 For this reason the years will come upon them when they will disturb (the
order), and make an abominable (day) the day of testimony, and an unclean day
a feast day, and they will confound all the days, the kodesh with the unclean,
and the unclean day with the kodesh; for they will go wrong as to the months
and Shabbats and feasts and jubilees.
38 For this reason I command and testify to you that you may testify to them;
for after your death your children will disturb them, so that they will not make
the year three hundred and sixty-four days only, and for this reason they will go
wrong as to the new months and seasons and Shabbats and festivals, and they
will eat all kinds of blood with all kinds of flesh.
Here is another document that was found at Betharaba:
As for the exact determination of their times to which
Israel turns a blind eye, behold it is strictly defined in the
Book of the Divisions of the Times into their Jubilees and
Weeks.
(CD XVI, 2-4)
This is a longer version of the title of the
Book of Jubilees
4Q320 reveals that there are both solar and lunar months. Here is a portion of that document:
Mishmarot A (4Q320)
Fr. 1 i
I ... to show it from the east. [And] to cause it to shine [in] the middle of
heaven, in the foundation [of the creat]ion, from evening till morning.
(There is full moon)
On the 4th (day) in the week [of the sons of G]amul in the first month
of [the firs]t year.
[On the 5th (day) in (the week of) Jedai]ah, (corresponding) to the
29th (day of the lunar month, which falls) on the 30th (day) of the 1st
(solar month).
[On the sabbath in (the week of) Hak]koz, (corresponding) to the
30th (day of the lunar month, which falls) on the 30th of the second
(solar month).
[On the 1st (day) in (the week of) Elia]shib, (corresponding) to the
29th (day of the lunar month), (which falls) on the 29th (day) in the third
(solar month).
[On the 3rd (day) in (the week of) Bilg]ah, (corresponding) to the
30th (day of the lunar month, which falls) on the 28th day in the fourth
(solar month).
[On the 4th (day) in (the week of) Peta]hiah, (corresponding) to the
29th (day of the lunar month which falls) on the 27th day in the fifth
(solar month).