I used this one: https://www.amazon.com/gp/product/B07MR7T5D5 But keep in mind that you will have to remove the pin header, solder the PCB to the GPIO pins, and relocate the battery (or else it won't fit). I would add a picture but I keep getting an error saying the image is too large. I reduced it ...

@markkuk - thank you! I had updated the ntp.conf file but I was missing the command to initiate the service. I updated my first post to include your instructions. So... to recap: After enabling the RTC, the kernel will keep it updated without me needing to schedule anything. How does it know where t...

@epoch1970 - Agreed, that is what I came to realize after much pain in trying the zillion "here is how you do it" instructions found on the web. I am trying to figure out: 1) What software is responsible to update the RTC chip with time from a remote NPD server (x.north-america.pool.ntp.org)? 2) Wha...

First post... please have mercy. Scenario: I have two Raspberry Pi 4 (4GB) running PiHole and Unbound to provide DNS services to my home network (about 70 clients on Unifi based gear). I recently decided to block all internet access to my IP Cameras due to security concerns therefore I needed to pro...