https://diler.tube/videos/watch/23a67b5c-f48e-4996-9e17-479a9c241a14 This mystery medieval calendar has been in the Royal Society's archive for about 350 years, simply labeled 'a very curious almanack' Join us for the restoration and discover the secrets hidden in its (sometimes poisonous!) pigments. Thu, 02 Jul 2026 19:06:10 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://diler.tube https://diler.tube/lazy-static/avatars/f58b270a-6076-478a-ad43-3888a532ecb4.png https://diler.tube/videos/watch/23a67b5c-f48e-4996-9e17-479a9c241a14 All rights reserved, unless otherwise specified in the terms specified at https://diler.tube/about and potential licenses granted by each content's rightholder.