I have a campaign that I send periodically to various lists.  I would like to view the "Open" statistics for specific given dates for this campaign. How do I accomplish this?

Unfortunately, at this time, we do not offer the ability to export opens by a specific campaign send date. 

However, we do have the ability to export the statistics for Opens for a given campaign, but the statistics will be for all of the sends of a given campaign. To learn more, read the article How do I download contacts who have opened a specific campaign?