In Jainism, according to our original scriptures there is no fixed rule that a particular weekday belongs to a particular “Jain God.”

• The main focus of Jain Dharma is on:

- 24 Tirthankars - Panch Parmeshti (Arihant, Siddha, Acharya, Upadhyay, Sadhu)

• They are beyond time and worldly calculations like days, planets, etc.
• So, no Agam or main Jain scripture says:

- “Monday = this Tirthankar” - “Tuesday = this Dev/Devi” etc.

What you may have seen are local or family traditions, like:

• Some families doing special puja of a particular Tirthankar or Dev/Devi on a fixed weekday.
• Some charts shared in WhatsApp / calendars linking weekdays with Tirthankars or Yaksha–Yoginis.

These are:

• Not compulsory
• Not uniform (they differ from place to place)
• Not based on direct Agam injunction

So, from a pure Jain-dharma point of view:

• Every day is equally suitable for worship, swadhyay (study), pratikraman, meditation, and remembering all Tirthankars.
• If your family has a tradition (e.g., certain puja on a particular weekday), you may follow it as a personal/house tradition, but do not think Jain shastras demand that “this day belongs only to this God.”

If you want to see one commonly followed practical list (used by some Jains, not scriptural), you can refer to this discussion on JainKnowledge: