Answer

If by “beyashna” you mean the Jain practice of taking two meals a day, the first meal is usually taken after sunrise, commonly after Navkarsi time, which is about 48 minutes after sunrise. The second meal is then kept before sunset. ( jainknowledge.com)

Explanation

In Jain practice, food after sunset is generally avoided as part of chovihar, so beyasana is planned within daylight hours. Exact timing can vary a little by family or tradition. ( jainknowledge.com)

Spiritual Understanding

This discipline supports ahimsa, self-restraint, and mindfulness in eating, which are important Jain values. ( jainknowledge.com)

Takeaway

So, the first meal in beyasana is generally after sunrise, often after Navkarsi, and the day’s eating is completed before sunset. ( jainknowledge.com)