And he causes all, the small and the great, and the rich and the poor, and the free men and the slaves, to be given a mark on their right hand or on their forehead, ~ Revelation 13:16
The ritual marking is fixed on the calendar to 46 days before Easter Sunday to signify the number of chromosomes in our bodies. The DNA transformation implicit in the mark of the Beast will begin with the 46 chromosome body and end in something akin to an "Easter Sunday" bodily resurrection! This liturgical calendar is entirely pagan, Easter being only Christian in its veneer, like Christmas. The Lord was raised on the weekly Shabbat during Pesah, so any pretense of honoring the Lord by observing a "Resurrection Sunday" alongside the pagans is done in ignorance.
Where the mark is put signifies the mark of the Beast. Who makes and applies it fits the mark of the Beast. The mark made with the ash signifies the Beast. The ash and its composition signify the mark of the Beast. Even when Ash Wednesday is celebrated points to the mark of the Beast.
See Ash Wednesday - A Fourth-Day Ritual Prefiguring the Mark of the Beast.
Part 26 - Rango - The Ash Wednesday Mass
Part 27 - Rango - Lent Begins with Ash Wednesday