I am setting up a session calendar on Obsidian Portal . Accounts are free and the calendar comes with a visual view as well as a RSVP system and notification emails. It should also adjust the time for you; this means that I post all the times as if the clock was one hour more (UTC+1) as that's where I am. Please check to see that the time listed in the description to the right (shown when you click on an event) matches the original time but adjusted for your timezone. If you do this once the rest should be good from there. Sign up > post your username > accept an invite > use calendar. Update: Stephen says that the time adjustment looks good to him. As he is in another timezone from me that should mean that the system is working. Update 2: Feel free to use the full extent of the campaign's features. I will be locking it so no outsiders can come in. There is a neat-o character section, a maps section and some other really useful stuff!