Since I made first puzzle proly too hard, I try it here first. Only changed actual puzzle to A,B,C,..etc. Please write some comment what you think about it and how to change it. I wanted to do it like meta-puzzle, but it would end like my [first puzzle][1]     
>! **Part 1:**    
>! Find: YYyy-MM-dd (years-months-days)     
>!  
>! YY = Current difference between A and B in days     
>! yy = roman numbers **I**n te**X**t      
>! MM = Difference between D and E (some number, hard to see in given context)      
>! dd = Only day in june, when something F      
>!        
>! (if you find something like 20 months, add 1 year to yy and now you have 8 months)        
>!       
>! **Part 2:**     
>! After you find wiki-date, or you knew about it: Solve x and y, where G and F are given from that wiki-date-page:     
>! 19*G+2*F+0.00743331 = x^y-y     
>! What is *yx*?      

Sadly I could not find alternative for that 0.00743331.
  [1]: https://puzzling.stackexchange.com/questions/49617/robot-dan-and-i