When I do not have cellular or wifi service, my calendar events do not show up on my phone.  None of them.  This is a problem when I am trying to set doctor appointments and other events while inside buildings, elevators or travelling.   This is a huge problem for me.  Is there ANY way to make the calendar to download and leave it on my phone?  The moment I get cell service, the calendar returns, but usually it is too late to be useful.

Running Android Lollipop on a Galaxy S5 Active and Windows Live Mail 2012 desktop PC with Win7 Premium.