wrong relative upload date
It's a regression with v2, #169
My timezone is GMT+2. Screenshot from nitter.42l.fr, commit https://github.com/zedeus/nitter/commit/52983e5

![image](https://user-images.githubusercontent.com/58657617/83428855-6e5b8380-a433-11ea-8b89-3cdec641a521.png)

Screenshot from nitter.net, commit https://github.com/zedeus/nitter/commit/08bae11

![image](https://user-images.githubusercontent.com/58657617/83428955-964ae700-a433-11ea-8e96-1375e0cdcad8.png).

I've tried with commit https://github.com/zedeus/nitter/commit/00dfb2fee43e2999b00d06f7aaf5871659d08cd0 (latest on master, before #169), this bug doesn't happen, then it's a regression with #169.