Not very necessary, IMO. I know what day it is here, so I can figure out what day it is UTC in half a second because the day changes UTC before it does here.
"Current local time is 18:45:41, UTC time is 00:45:41" - It's Tues here, so it's Wed UTC.
"Current local time is 8:00:00, UTC time is 14:00:00" - It's Tues here, so it's Tues UTC.
"Current local time is 18:45:41, UTC time is 00:45:41" - It's Tues here, so it's Wed UTC.
"Current local time is 8:00:00, UTC time is 14:00:00" - It's Tues here, so it's Tues UTC.