How many years have passed in TWD since the apocalypse began?

Looked up the timeline and the wikia says 610 days which is 1 year and 8 months. Is this accurate?

This mainly stems from me asking how big the time skip would have to be in FTWD until both shows run parallel timeline wise.

Submitted January 30, 2018 at 05:21PM by TheFox9792 http://ift.tt/2nmPqFF