I’m making a social media app but i didnt give a thought about global time, i was working on local time. But i want my app to work according to UTC how do I do it? The time the post was posted.
Use Any API.
App Is On Social Media, So It Will Always Be Connected To Internet.
Then It Can Be A Good Option.
One More Option -
Wait For Others Reply. 
I’m finding it difficult, i have to get the utc time for every post that loads it takes time.
Also the DST is very confusing. I have set my timezone to Adelaide,Australia(+10:30) but due to DST (I think, not sure about this) it is +9:30