When was TeX.SE founded? I notice that a lot of early questions were migrated from StackOverflow. So I'm wondering when the actual TeX.SE site was created.
The exact day of the proposal on area51 is Jun 2 '10 at 14:20. It can be seen in the revision history of the proposal post.
As doncherry said in his comment above, dates are at the right side on the TeX.SE proposal page. It currently shows "commitment start 2 years ago" etc. However, looking at the source code of the web page you can see the exact dates, so here's the time line:
- proposed: 2010-06-02 14:20:32Z
- commitment start: 2010-06-22 02:35:48Z
- private beta start: 2010-07-26 19:00:00Z
- public beta start: 2010-08-02 19:00:00Z
- launched with new design: 2010-11-11