Online "database" for mathematical conferences? I am about to start applying for Ph.D programs (mathematics), and while compiling my CV, comparing it with many examples avaliable across the internet, I noticed that almost everyone attended one or two conferences during his bachelor/master years.
Now, I just didn't do that. I don't know if this could be an issue or anything, anyway, that is not my question.

Since I have at least four months until most programs start, I wanted to look for some conference that could be interesting. At my university there is a hallway where posters of such things are hanged, but I couldn't find anything online (apparently each university publishes its own conferences on its website, and that's it).

I can't believe there isn't an online equivalent of the above mentioned hallway, my question is: is there?
The American Mathematical Society has a calendar of conferences: http://www.ams.org//meetings/calendar/mathcal

As does the Mathematical Association of America: http://www.maa.org/meetings

And the Society of Industrial and Applied Mathematics: http://www.siam.org/meetings/