Jain kāl‑chakra ke 4th āra (Duḥṣamā‑Suṣamā) ki avadhi “1 kroṛ‑kroṛ sāgaropam” hoti hai. Yeh itnā aparimey lamba samay hai ki ise sadhāran “years” (varṣ) me badalna sambhav nahi mana jātā. Digambar aur Śvetāmbara dono paramparāon me is āra ki avadhi ka yahi mān hai. Vartamān me hum 5ve āra (Duḥṣamā) me hain.