Aaj kal aap aksar sunte hain Shamsi, Miladi, aur Hijri kalendaron ke baare mein. Kai logon ko lagta hai in alag-alag tareeqon ko samajhna. Asl mein , yeh har tareeqe duniya ke khule ek ek time ka hissa hain. Miladi tareeqa {goi ki | shabashme' | bas] saal ke dinon ki aded par mabni hai aur Shamsi tareeqa suraj ke ghiraaron ke rakhne par dastavez h