Date and Time issues, MADDENING!

Maybe someone can shed some light on what's going on?

I should mention that I travel a lot so I tether my phone for 4g internet. I CANNOT get my wallet (bitcoin/litecoin) to sync, and I always get the same warning notification: ..."If your clock is wrong Bitcoin will not work properly." I've checked and double-checked my settings and my time zone. I've tried changing it to other time zones to see if maybe my tether sets up elsewhere, I've tried changing the way windows syncs it's clock to make it more accurate. I've checked BIOS date/time. I've tried several versions of the wallet. Is this an issue with 4G tethering or am I just missing something uniquely simple? Thanks for any help guys, it's much appreciated as I'm at the end of my resources.

TL;DR Date and Time are correct on comp, cannot sync wallet due to mismatch, I use 4g tethering for internets.