Aaj kal aap aksar dekhte hain Shamsi, Miladi, aur Hijri tareeqon ke baare mein. Aksar logon ko mushkil lagta hai in tamam tareeqon ko samajhna. Asl mein , yeh sab tareeqe duniya ke khule zamaney time ke ansaar hain. Miladi tareeqa {goi ki | shabashme' | bas] saal ke roz ki sankhya par mabni h