Hi,
Ord Dep start date is 01.09.2009
& Till 31.12.2012 its showing Expired useful life 3 years 184 days.
Hence, 01.09.2009 + 3 years 184 days = 03.03.2013.
About show 3 Years and 3 Months:
01.09.2009 + 3 Years and 3 Months = 11.2012.
do you mean that currently, currently you system period is 11.2012?
Regards, Bowen