User Specific Timezones

Hey! Just wanted tell you about an idea I had. So a lot of people who communicate online have different timezones. You think there would be a way for in direct messaging for it to display both timezones for messages sent and received. Just to help people when getting to learn someone to have a bit more insight on why someone isnt there or just a self reminder that 10 am for them is actually 5 am for their new buddy who might still be asleep. Basically for me I'm in EST so right now if I sent a message it would say when it was sent my time (2:54 PM) but let's say this new thing was implemented and I messaged someone in PT then the message send time would be listed like this (11:54 AM/2:54 PM).