Automatic Time adjustment

So one of the best things discord gave us. is a place to host our communities. 
But with different people come different time zones. 
so my idea was this: 
A timezone option in account settings for people to set. 
Then a special command in the chat that changes a input time to other times based on the timezone of the person seeing it. Or maybe if that's too complicated a popup for it when hovering over it. 

the comand can be something like. [[ ]] or {{ }} similar to how the spoilers are || ||