Kitely has a calendar of upcoming events. These events are displayed in the Viewer, before the user logs into the grid.
You can also view the calendar here: Kitely Events Calendar.
If you want to add your own events to the calendar then you need to be authorized.
The calendar is managed by Selby Evans. Ask him for authorization by sending a private message via the Kitely Forum.
If you don't get a response then the following users can also authorize you: Min Tigerpaw, Kayaker Magic, Deuce Halsey and Dot Matrix.
In your request, include your Google+ user name.
Once you've been authorized, you will get a notification saying that you have access.
When you add an event to the calendar, make sure to include the address of the world that hosts the event. If you do so then Kitely will allow users to visit this world with a single click.
For example, if you are holding your event in the Kitely Welcome Center, then enter this world's Hypergrid Address in the event's "Where" field:
grid.kitely.com:8002:Kitely Welcome Center
If you wish, you can enter the world address in the event's Description field instead of the "Where" field. If you choose to do this then the address must be the last thing in its line.
You can optionally specify a starting location in the world by adding the coordinates after the region name. Note that this will only work if the world doesn't have a default starting location set. Here are two examples (with and without a "Z" coordinate):
grid.kitely.com:8002:Kitely Welcome Center/120/130
grid.kitely.com:8002:Kitely Welcome Center/120/130/21
In general, the event description should contain only plain text (not HTML). However, it's possible to include images by using this format (substitute your own image URL):