@janmr.com on Bluesky

JavaScript RequiredThis is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is. Learn more about Bluesky at bsky.social and atproto.com.

Post

Jan Marthedal Rasmussen

janmr.com

did:plc:vu6qczmz4fwvt5hylbxjlcd6

Leap Year Rules http://janmr.com/posts/leap-year-rules/ #datetime

2026-04-29T09:42:18.163Z