Dynamic loading and timeshift parameter

Hello,
I’ve used the dynamic loading property (setting setLoadMode(“month”))
and for September the url was
?timeshift=-60&from=2015-08-01&to=2015-09-01

I was expected something like ?from=2015-09-01&to=2015-10-01
What does timeshift mean?

Thanks in advance
Cheers
Matteo

Hello,
timeshift goes for timezone offset, this parameter is currently not used on server side