Question: I saw that there is a post with a [List of TCS conferences](https://cstheory.stackexchange.com/questions/7900/list-of-tcs-conferences-and-workshops). However, this does not list important dates like conference date, submission deadline etc. Is there any post or website which maintains these information and also keeps it up-to-date?

Answer: 
I'm maintaining such a list here:
<https://sites.google.com/site/yixincaoresearch/conferences>.

Thanks due to Anupam Gupta and Iftah Gamzu.
Miki Hermann maintains such a list, and keeps it very much up-to-date:

<http://www.lix.polytechnique.fr/Labo/Miki.Hermann/conf.html>