As in parts of the world have different time zones, you can send a message to that person via social media in which the time stamp says 21:30 at night from your perspective, but when they receive it their clock says 04:30 in the morning -17h in the past despite hanging out via discord chat. They haven’t responded yet until 09:00 (CDT) on Fri which is 02:00 (JST) on Sat, by then you are already ZZZ so the conversation already ended before it started.

I’m planning to create a group chat with my friends in the future but most of us live in different regions. So, how can response time be in sync despite being positioned in different parts of the world? Will GMT have to be the standard: like “Chat is active between 08:00-22:00 GMT” meaning people will have to work out -/+ hours in correspondence to their time zone whether they are -6 or +12 hours from Greenwich in order to stay online at the same time.