Neither will I. As far as what you quoted Zec. 14, well, the context doesn't bode well if related to the end of this last age. It seems to have happened in the past. Since Jesus' time, there is to be no more sacrifice for sins, for He died once for all times. Likewise, there is no need for the celebration of festivals, etc., for the keeping of feast days in a religious sense is not a part of the Good News of salvation.
So we missed the day of the Lord?