Dave’s House Remastered 3AM Secret (Spoiler warning, Use Subtitles for some information)

I was going on an Achievement hunt on Dave’s House and when i was curious to do the 3 AM one, this happens, Can someone explain to me what the heck just happened, especially at the end Game link : To earn = If your on windows (Which i assume so) Search “Change clock“ or so, click the setting, change it to manually configure or get rid of the automatically configure, then change the clock to 3AM/3 ,After that play the game, click play and boom, you got the Achievment Alt = Wait till its 3AM, then play the game I might sometimes do a playtrough on this game if yall want me to, as of now I’ll be working on the Teacher’s Madness mod