Ek Yug ka matlab Jain dharm me thoda alag hota hai. Jainism me samay ko Kalchakra kaha jata hai, jo anant hai aur lagataar do adhai me ghoomta hai:

• Utsarpini (ascending/progressive half) aur
• Avasarpini (descending/degenerative half).

In dono adhai ko phir se 6 uneven period (अरास, ārās) me baanta jata hai. Is tarah poore Kalchakra me kul 12 period hote hain (6 utsarpini + 6 avasarpini). Isliye “Yug” shabd ko Jain granthon me aam tor par Kalchakra ya uske ek arā se joda jata hai, na ki ek alag standalone yug ke roop me.

Aaj ki sthiti: ham abhi Avasarpini ke antim arā me yaani avasarpini ke daur me hain, jisme dharm aur samajik sthiti dheere-dheere gir rahi hoti hai. Yahi kaal-chakra ki srotik dhara ka hissa hai aur kalchakra phir se utsarpini ki or palat jata hai.

• Sandarbh: Kalchakra (dohri aadhe) aur unke 6 arās ki vyakhya Jain cosmology me hoti hai. Aksar Digambar aur Shvetambar paramparaon me durations ya details me kuch antar mil sakta hai, lekin mool idea wahi hai: yeh ek anant chakr ke roop me bar-bar aata-jaata hai, jisme har aadha 6 arās me badhata-gata rehta hai. ( jainpedia.org)

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