Time cycles in Jain Dharma (Jyotish) is not about planetary astrology. In Jain cosmology, time is endless and cyclical. One complete cycle (kalpa) is made of two halves: utsarpiṇī (ascending/progressive) and avasarpiṇī (descending/regressive). Each half contains six eras (ārā) of unequal length. We currently live in the avasarpiṇī half, in one of its eras, and the cycle continues forever. This is a natural rhythm of the cosmos, guided by karma and dharma, not by horoscope predictions. Digambara and Śvetāmbara traditions agree on the basic idea of utsarpiṇī and avasarpiṇī, with variations in details from different texts. You can read more here . ( jainknowledge.com)

Key points in simple terms:

• Time is cyclical, not linear.
• A kalpa (cycle) has two halves: utsarpiṇī (improving) and avasarpiṇī (declining).
• Each half has six eras; the lengths of eras are extremely long.
• We are in the avasarpiṇī phase now, moving through eras of gradual decline.
• The concept is common to Digambara and Śvetāmbara traditions, with textual differences in details. You can read more here . ( jainknowledge.com)

If you’d like, I can point to specific Jain scriptures that describe utsarpiṇī and avasarpiṇī in more detail.