Map with specific needs

I need a map, that can be embedded into the site.

1. Users need to be able to add push-pins, dots, or little markers to the map. Preferably with the ability to fill out a 2-3 question form (with brief questions on the issues)
2. The push-pins that users submit should be 1. Viewable to the publish once they have been submitted and 2. Be time stamped. Because…
3. I need the default view of this map to be push-pins added in the past 60 minutes. This is the hard part…I only need recent issues reported, and not issues from days ago. I would prefer to be able to view the map in the last 60, 120, and maybe 180 minutes, but it is not that important. Is there a plugin out there that can do this. I’ve spent some time searching and haven’t come up with anything. Thanks