There's a lot of confusion about the day of the week. Is today Monday or Wednesday? Well, according to https://t.co/1c4n2pDSqG we're unsure.
— Searge (@SeargeDP) 2016, 2月 15
【Minecraft】今さら人には聞けない Snapshotのダウンロード/プレイ方法
http://minecraft-diary.jp/blog-entry-1138.html
source : まいんくらふとにっき