We're working on a new OpenHistoricalMap with timeslider-enabled vector tiles, improved date editing in iD, a scaleable cloud architecture, and more open hosting and governance processes. It will be a bit before we get the datbase loaded and ready for edits. Meanwhile, you can explore the OHM timeslider demo here, check out our Github activity, or join the conversation on the #openhistoricalmap channel on the OSM Slack. Click to toggle scroll-zoom.
As the URL hash value changes, we'll update the time and geoloc sent to the nullschool iFrame. sample
View slider with dates and coding needs in our pull request. You can fork our fork to add coding updates.