Aaj kal aap aksar dekhte hain Shamsi, Miladi, aur Hijri nizamoon ke baare mein. Aksar logon ko mushkil lagta hai in sabhi tareeqon ko samajhna. Dar असल, yeh tamam tareeqe duniya ke khule zamaney time ka hissa hain. Miladi tareeqa {goi ki | shabashme' | bas] saal ke roz ki aded par mabni hai a