Answer

Yes, you can learn it at 12 am to 1 am, but it is usually not the best time.

Explanation

In Jain Dharma, sutra learning should be done with:

• a calm mind
• full attention
• respect and purity

Midnight to 1 am is often a time when the body is tired, so concentration may be weak. If that is the only time you are free, you may still study quietly and with devotion. But if you have a choice, early morning or another fresh and peaceful time is better.

Spiritual Understanding

For sutra learning, the main thing is not only the clock, but the quality of your awareness. A clear, alert, and disciplined mind helps the words settle deeper. In Jain practice, reverence and right understanding are very important.

Takeaway

You may learn it at that time, but a more suitable time would be when you are fresh, focused, and शांत.