[T Minus Four]

I could be wrong, but I beleive the charts are oriented to True North, not mag.

[Textide]

The sectional charts used for VFR flight are based on true north. Lines of magnetic variation are shown with purple dotted lines and the amount of variance from true north.

Published routes on other charts, such as Instrument Approach Plates and Low/High Altitude Enroute charts are always given relative to magnetic north. Radials of VORs, a type of navigational aid, are based on magnetic north. When the winds are reported via a recording to a pilot at an airport (ATIS), they're converted to magnetic north. And the runways at airports are labeled based on magnetic north. The annual change of magnetic variation for a particular airport is listed on its airport diagram.

Here's an example (link from airnav.com): http://204.108.4.16/d-tpp/1013/00237AD.PDF

At the left side of that chart are the variation arrows and a note explaining that the annual rate of change is 0.1 degree west.

The compass knows where north is. It's ancient, but it works and its flaws are taught to pilots. It's also a required instrument for all IFR flights, even on airliners.