Why was the date of December 10th so significant in Shirdi's history, according to the texts?

The date of December 10th holds a dual significance as described in the chronicles of Shirdi. The primary event of this day was the laying of the foundation stone for Dixit Wada, for which Kakasaheb Dixit had received Baba's permission. As Chapter 4, chunk 28, details, this was a momentous occasion for the devotee community. However, the same source reveals another great event that began on that very day. In addition to the Wada's foundation, the "Shej-Aarti" (night prayer) in the Chavadi was also initiated on December 10th, and was conducted "with great devotion and love." This makes the date memorable for two major and lasting contributions to the life and rituals in Shirdi.