The rules for this cache are quite simple. In order to claim this cache as a "find", you need to find a cache PLACED on every day of the year (366 days). This means that if you find a geocache that was placed on January 1st of any year then that cache covers the first of 366 days in the year. Regardless if you find the cache on January 1 or January 31 or even August 19 of any year it still counts for January 1. The same goes for any other cache placed on the respective dates
Now any and all geocache types count toward this challenge. Additionally all geocaches count regardless of the day, week, month, or year that they were published.
In your log, you need to either provide a screenshot like I have given an example of above, or create a Bookmark Listing that lists all 366 caches.
Any logs that do not provide qualifying proof of completion WILL be deleted.