Answer

No, in the usual Jain tradition he is remembered as having foretold that Marichi Kumār would become a Tirthankar, but not the exact time or date.

Explanation

The prophecy is understood as a future certainty, not a calendar prediction. It means Marichi would attain Tirthankarhood after many future births and a very long span of time, but the tradition does not commonly record a precise “when.”

Spiritual Understanding

This shows two important Jain ideas:

• The soul can rise to the highest spiritual state through future effort.
• A Tirthankar’s path unfolds over many lifetimes, according to karma and purification.

Takeaway

So the answer is: yes, the future status was disclosed, but not the exact time.