Read Your Qur'an!
“Allah [swt] sent His rasul [saws] with The Guidance, and The Deen of Truth-- that it be dominant over all other ways...” [Q9v33]:
“...they wish to refer legislation to taghut, while they were commanded to reject it...” [Q4v60]:
Oh Muslims, use your brains. The calendar dominant with most of you, is based on taghut, and pleases Shaitan. Examine the evidence for yourself. Click the links under the names to witness the taghut in the pagan calendar system:
Janus,
Mars, Tui,
Odin,
Thor,
Frigg,
or Saturn.
Did you click?
If you still don't believe that acceptance of Pope Gregory's calendar is committing shirk, remember what Prophet Muhammad [saws] told Adi bin Hatim at-Taiy (listen here):
“Truth stands clear from falsehood. Those who reject taghut and believe in Allah have grabbed the most trustworthy handhold that will never break...” [Qur’an 2:256]:
The Pope and his Priests cannot make the taghut, halal.