Calendar by user timezone

Hello,

I have many users from all over the world and they are complaining that the timezone is not in their own timezone so its confusing to them. How can I make it so that the dates on the fullcalendar and all events dates are shown based on the users timezone?

I would buy an account for just this lol

https://www.ads-software.com/plugins/event-organiser/

[Moderator Note: No bumping, thank you.]