Hi Scott. If it's connected to a network with access to the internet, the clock will check for updates to the resource file that contains the data every 24 hours. I've been waiting for confirmation from NASA on the landing coordinates before updating the file (I have some coords, but needed confirmation). Mars24 has been updated with new coordinates and I'm using that as my confirmation. The new file should be uploaded within the next 2 days - you shouldn't have to do anything, it should be automatic). I'm glad you're enjoying the software!

New data has been uploaded. If you have Perseverance data selected, you may have to go into the config options and select "Save & Exit" or "Abort" to load the new data (after the program has downloaded the new data - you can force this by restarting the application or rebooting the machine).

Scott, you can always edit the mission_data.json file, but whenever the program detects a new version for download it will overwrite your changes. Alternately, you can create a skin where you embed the text you want in it, in effect faking the text.