Answer

Different Jain communities follow different festival structures and calendar observances mainly because of differences in:

• Jain traditions such as Śvetāmbara, Digambara, Sthānakavāsī, Terāpanth, Mūrtipūjak, etc.
• Regional calendars followed in different parts of India
• Scriptural and monastic traditions preserved by different Jain sects
• Different ways of calculating lunar dates
• Variations in ritual practice, while keeping the same spiritual aim

The core purpose remains the same: purification of the soul, practice of ahiṃsā, self-discipline, forgiveness, fasting, study, and devotion.

Explanation

Jain festivals are usually based on the lunar calendar, not the fixed solar calendar. Because lunar dates can be calculated in different ways, observances may fall on different days in different communities.

For example:

• Paryushan is observed differently by Śvetāmbara and Digambara traditions.
• Śvetāmbara Jains generally observe Paryushan for 8 days.
• Digambara Jains generally observe Das Lakshan Parva for 10 days.

Both are spiritually focused on self-purification, restraint, repentance, study, and forgiveness, but the structure and emphasis differ according to tradition.

Similarly, some communities place greater emphasis on:

• Kalpa Sūtra recitation
• Das Lakshan Dharma
• Pratikraman
• Tapasya and fasting
• Temple rituals
• Lectures by monks and nuns

These differences do not necessarily mean contradiction. They reflect different established Jain traditions.

Spiritual Understanding

In Jain Dharma, the outer form of observance may vary, but the inner purpose is most important.

The true purpose of festivals is to:

• Reduce passions such as anger, ego, deceit, and greed
• Practice forgiveness
• Strengthen ahiṃsā
• Study Dharma
• Perform repentance
• Move closer to the soul’s purity

So, whether one observes an 8-day structure or a 10-day structure, the spiritual goal is the same: ātma-shuddhi, purification of the soul.

Takeaway

Different Jain festival calendars exist because Jain communities have preserved different traditions, calendars, and ritual structures. But their deeper purpose is united: self-discipline, forgiveness, non-violence, and liberation-oriented spiritual growth.