PA Local Tax for Out of State workers

I live in PA but my company is HQ in NY.  When filing state taxes, i file a nonresident NY return and a resident PA return, and pay state taxes based on the proportion of time I spend in each state, which is roughly 80/20, PA/NY.  For my local PA tax, which is 1%, and filed outside of TurboTax, i can't find a way to similarly adjust my PA income for time worked in NY (and yes, tax paid), the same way i do for PA state taxes.... 
Are PA local taxes not adjusted in the same way that PA state taxes are?