It means every photo is a freshly photographed photo on that day. It's a challenge to shoot at least one photo every day. As a photographer it is good to keep shooting even when you really don't think you feel like it, or feel like you are in a rut. A photo per day is kinda like a coping mechanism to fight off creative blocks.
I used to do #onephotoeveryday for a year in the past, shooting daily, but after the tag got popular, many people started posting old photos from their personal albums, it kind of lost its meaning. So I started a new tag #dailyandfresh for actually fresh daily photos.
Even these, that were shot when I was sick, were taken daily, although I couldn't post them on that day, I decided they'll still count.
Oh, and then there's #weeklyandfresh, that's for a weekly recap of those photos I took on the past week.
I hope I managed to answer your question. 😁
Thank you for your explanation. You managed very well to tell what the tag stands for. Instead of fighting the writer's block it's fighting the photographer's block.
I guess an explanation is needed with each post to avoid people post the wrong thing, although I doubt it can be avoided.
#ccc for example stands for the community Curation Circle Creed. This community exists longer as the tribe creativecoin but many abuse the tag. Even starting a hive and explaining what it stands for doesn't ring a bell. People simply do not read or copy each other.
Good luck with your pgoto's. 💕