Answer

Yes — your summary is broadly in line with the traditional Jain understanding of porsi (also written porshi) and the related time divisions used in daily discipline.

Explanation

In Jain practice, the time after sunrise is traditionally divided for the purpose of meal discipline and observance of vows.

A commonly used traditional sequence is:

• Porsi — about 48 minutes after sunrise
• Sadh Porsi — about 1 hour 36 minutes after sunrise
• Purimuddh — about 2 hours 24 minutes after sunrise
• Avaddh — about 3 hours 12 minutes after sunrise

These are used in some Jain communities and calendars to guide the timing of meals, especially for śrāvaks and śrāvikās observing restraint.

Spiritual Understanding

The purpose of this discipline is not only to follow a timetable, but to cultivate:

• Self-restraint
• Awareness in daily conduct
• Respect for vows
• Reduction of carelessness in eating and living

In Jain Dharma, even daily food discipline is part of spiritual purity and non-attachment.

Takeaway

Your table is a good practical summary. Just remember that exact porsi timings can vary slightly by tradition, locality, and the Jain panchang used.

If you want, I can also help you with a clean Jain-style table of these timings for study or notes.