In regards to Dan 9,27
From the midst of an early pessach week (march 24th) backwards in time 3 and 1/2 years you land exactly on the day that pope francis adressed the many leaders of the world to strengthen their league/covenant.
Also counting forward in time from march 24th 1290 days you land on Yom Kippur 2022.
March 24th is not in winter, it is one day after Shabbat. It is the day of first fruits and the time would be cut short compared to an April Pessach.
Could the mark of the beast be implemented on Purim Feb 20th 2019?
From there ist exactly 1335 days to the end of Sukkot ...