To add a new jam you can submit a pull request with the jam's information added to one of the json files in this directory. Once accepted the page will be updated and your jam will be visible.

If you're not familiar with creating a pull request then you can also open an issue on the issues tracker with the jam you want added.

If you don't want to use GitHub at all you can use this Google Form to submit a jam and an admin will review it and create the change for you: https://docs.google.com/forms/d/1c2UrXfRdJm723fv7kJY0BG7eOCg8nC9eNp-fARe6aqE/viewform

Jams are organized by their starting year. Choose the json file that corresponds to the year when your jam starts, if the file doesn't exist yet then you can create it.

For example let's create a new jam that starts May 4th, 2014 at 12pm and lasts 10 days.

You'll need to create a new object in the jams array, the position doesn't matter but for simplicity keep things in ascending order of start date.

If you are specifying a time in addition to date for your start and end then you should provide a timezone (otherwise it defaults to UTC). More information on times and dates below.

The following fields are required: name, url, start_date, end_date.

jams/2014.json

{
  jams: [
    .. other jams ..,

    {
      "name": "My cool jam",
      "url": "https://example.com/my-jam",
      "start_date": "2014-05-04 13:00 -0700",
      "end_date": "2014-05-14 13:00 -0700"
    }
  ]
}

Optionally you can provide the fields description, image, tags, themes. Here's a more complete version of the above example:

jams/2014.json

{
  jams: [
    .. other jams ..,

    {
      "name": "My cool jam",
      "url": "https://example.com/my-jam",
      "start_date": "2014-05-04 13:00 -0700",
      "end_date": "2014-05-14 13:00 -0700",
      "themes": ["cool-things"],
      "tags": ["leafo-jams"],
      "description": "This is the jam we've been waiting for, I hope you are ready. I know I am!"
    }
  ]
}

Tags and themes can be used to classify your jam. If your jam is part of a series then definitely make a tag for that series (even if it's the first one of the series). Re-use existing tags whenever possible.

Tags and themes should be written in-lowercase and separated-by-dashes.

Both tags and themes are JSON arrays, so provide an array of strings (even if there is only one tag/theme).

The following patterns are supported for parsing dates. If either the start or end can't be parsed then the jam entry is invalid.

YYYY-MM-DD HH:mm:ss Z
YYYY-MM-DD HH:mm Z
YYYY-MM-DD

Z means timezone, in the form +0000. So PST would be -0700. You must provide 2 digits for day, month, or seconds even when they are less than 10. So 05 for May, 01 for the first day of the month, etc.

The final format YYYY-MM-DD is special, there is no time or timezone. This will cause the jam's start time to be 0:00 and end time to be 23:59 in the viewer's local time zone on the respective days passed in. That makes an inclusive range from start to end.

Feel free to edit any existing jams, fixing any errors or adding themes after they've been announced.