Standards
"Voyager 1 is now nearly 22 light hours from Earth, and Voyager 2 is eighteen hours and fifteen minutes away by radio."
hours?
22h - 97,200 seconds - 0.9167 days - 0.0208 Truss
18h 15' - 65,700 seconds - 0.7604 days - 0.0173 Truss
https://www.theregister.com/Design/page/reg-standards-converter.html