Also shows database revisions on startup. On the fly.garmin.com website you can see what database versions are the most current.
That said, databases are updated every 28 days, so if you don’t know if they’re current, they probably arent.
More importantly, your NAVIGATOR (GTN650, etc) needs to be current. Forget the charts, you need an up-to-date IFR navigator to be able to make sure it has the right approaches in there to fly them.