Life in a post card!
In this post, there is a list of the rolling themes and the tags to use to be part of the photo challenges. More people will see your pictures if you use these tags, and if you post them on the day indicated they are part of a contest, too.
https://steemit.com/goldenhourphotography/@juliank/happysundaysteemitshareyourgoldenhourandlongexposurephotography-201801280000016580