Shalom John,
  And all doves....what makes you think that they won't say this, durring Adar 2, which will be the month they will follow if they are keeping the Hillel calendar.  When Purim arrives on the date of Passover....they may recognize Messiah in one minute scope of time....and their Purim...like Esther's be turned into a Passover/ Exodus 2 arrival.
  They may have to stay on the Hillel calendar until Hamon's decree is annulled, but Purim celebration was really a Pesach Passover story for future generations.  A time when all the enemies of G-D's people will be destroyed.
  Or.....
  Could this be the time, when gentiles carry forth their edict to destroy the Jews, and Messiah comes to redeem them....while the gentiles learn a new insight into the reason Ya'Shua came...to the Jews first...then to the gentiles who are nothing more than Jews in diasporah.
  This is indeed a wake up call, from the Creator of all Mankind who was, and is, and everymore willbe.  The great I AM.
  But who is the wake up call for......those who keep easter/ or passover?

Shalom,
Miriam Brown....a believer in the return of Messiah, to complete the Passover He started 2000 + years ago.  Messiah who is He who comes in the name of the Lord!