Certificate errors with Bookworm 10.1 image

FlightAware ADS-B Flight Tracking
1

Having just burnt a new SD card with the V10.1 image from FlightAware, re-enabled SSH, and sorted out my feeder ID, I note that any attempt to update is met with the following error:
W: Failed to fetch https://www.flightaware.com/mirror/raspbian/raspbian/dists/bookworm/InRelease Certificate verification failed: The certificate is NOT trusted. The certificate chain uses not yet valid certificate. Could not handshake: Error in the certificate verification. [IP: 104.18.39.201 443]

Any thoughts getting round this?

2

Your install has the wrong date (too far in the past – the current certificate has a NotBefore date of 24 May, so if the system thinks the current date is before that, it will reject the certificate). This should usually fix itself, but if for some reason ntp isn’t working on your system, you’ll need to manually set the date/time once:

$ sudo date -s "2025-05-26 00:34:46Z"
3

Thanks for the pointer. Needed to also include timezone in the mix, but now sorted.