I love this idea!
I spend most weekends on my own (with my husband mostly in the periphery
) and I love it. I am mostly an introvert and I treasure time to myself, doing no matter what.
Lately, I have been playing with a scrap journal, adding writing, quotes, pictures, embellishments, etc. It is an ongoing project so I pick it up whenever I feel like giving myself some self love!
I love the idea of actually calling a day by this name, keeps one in the self care headspace.