Rookie question - Date and time

[Matt999]

Hi everyone,

I've bought a Vans RV-7 with dual AF-5000 screens, and trying to get to grips with thr system.

There are a LOT of flight logs (87!) that are dated 01/01/1970.

My flight today (April 10, 2022) was recorded as July 23, 2014.

I've seen the 'clock time zone offset', but can't find anywhere to set the date.

It occurred to me that there might be an internal battery that needs changing, but can't find any reference to one anywhere.

Please help!