In Jain Dharm, Suṣama‑suṣamā is not tied to a human calendar year like BCE/CE or Vikram Samvat.

A few key points:

• Time is beginningless and endless (anādi‑ananta) and moves in repeated cycles called utsarpiṇī (ascending) and avasarpiṇī (descending). ( jainknowledge.com)
• Each half‑cycle has six aras (epochs):

1. Suṣama‑suṣamā 2. Suṣamā 3. Suṣamā‑duḥsama 4. Duḥsama‑suṣamā 5. Duḥsama 6. Duḥsama‑duḥsama

We are now in the 5th ara (Duḥsama) of the present avasarpiṇī. The first ara of this same avasarpiṇī (Suṣama‑suṣamā) began an inconceivably long time ago, measured in Jain scriptures by huge time‑units (palyopam, sāgaropam), not by years like “X BCE”.

So, from the Jain viewpoint, you cannot meaningfully give a “year” when Suṣama‑suṣamā first began in our modern sense. We can only say that:

• It is the first era of every half‑cycle of time.
• The present Suṣama‑suṣamā of this avasarpiṇī is unimaginably ancient and not convertible into human historical dating.

Both Digambar and Śvetāmbara traditions accept this basic framework; differences are in detailed duration counts, not in attaching a specific worldly year.