There are serious problem in source file. You set there week during 10800 minuts, and day as 1440 minuts. Day during is correct, but 1440*7=10080!
Yes, this has been fixed in DayPilot Pro 5.9.
See also: http://kb.daypilot.org/42890/what-is-the-duration-of-one-week-in-minutes/
Thanks for reporting the bug!