Ruby subtract unix times and convert it into days and format DateTime

require 'date'

res=Time.now

days=2

res2=Time.now+(days*24*60*60)

DateTime.strptime(Time.now.utc.to_i.to_s,'%s').strftime("%d %m %y")




#find difference between 2 date times






((res2-res)/(24*60*60)).to_i