I got this sorted today. Pulled the satnav fuse first (no. 7 under the dash), but the LCD clock wasn't affected. Instead I removed the negative terminal on the battery and reconnected it after a few seconds, which reset the LCD clock to 1.00 as predicted.
All my SatNav favourites were retained...
Hi all, been years since I've been on due to nothing needed doing on the Accord!
Just found a weird little issue though: changed the clock on the SatNav screen like usual and the time on the high-level LCD isn't changing :huh:.
I've been in and out of the menu a few times and the SatNav screen...