24 hour Thunderbird -

[Bob Goodwin]

Fedora-30 insists that I use Thunderbird 60.6.1 (64-bit), refuses to dnf 
downgrade it, so once again I am trying to get it to do some of the 
things I find most convenient, in this case use 24 hour time instead of 
AM/PM.

Adding "export LC_TIME=C" to .bashrc m\does not change it. I think there 
was an °add-On that did it for me in the past but that's one of many 
that shows not compatible in my Thunderbird. Can anyone tell me how to 
change this?

Bob