Panchamrit abhishek of the Shivalinga with Rudri path.
Computed from the temple's own panchang: Abhijit muhurta on the deity's vrat day, Rahu Kaal avoided, tithi checked — each window says why it was chosen.
Auspicious saait: Monday / Trayodashi (Shiva) — these days are suggested; confirm the exact saait with a pandit.