Hello and welcome to another instalment of "Greeny answers questions literally nobody asked". Its one of those days where I try to be productive in school, but then I get an idea for a chart or script or something I want to make and hyper-focus on that.
For this, I only went off the several History pages on the Wiki. There might be some YouTube videos that released on one of these dates, but wasn't major enough to be put on the History page, but who cares? Of course, I'm not a robot, and I can't code, so there's a non-zero chance there's a mistake somewhere in here, but once again, who cares?
You'd think September would be the one with the least remaining dates, but its actually July with just three, and September is tied for 2nd with October with four. On the contrary, December is missing 10 days, all coming from the 2nd half of the month, most likely due to the holidays.
Scaratar is the only Celestial to not release on the 1st of its month in DoF, instead releasing on July 27th, and neither Young or Adult Scaratar have released on August 1st, so that's why its the only first of the month still remaining. Although, there's a high chance that could change this year assuming Elder Celestials start directly after July of this year.
Speaking of the numbers, the only date to have an MSM release in all 12 months is the 14th. On the contrary, the 20th, 22nd, & 28th still have five months left to snag.
Pinghound-Liszt: