Dear Karen -
Having a board is a great idea! I know several people who plan their days with big boards. It helps to have a clock next to it.
There are actually three meditation times for you every day
Susan is running the main meditation every day at 8pm Holland Time. That is 1pm CST. So if you make a note for 1pm CST, you can meditate with Susan.
Susan also has a "rolling meditation" where every person meditates at 8pm in their own time zone. So if you meditate at 8pm EST, you'll be part of that rolling meditation.
Unfortunately with my schedule I'm usually asleep during her "main meditation" - so I can't join in. I'm usually having dinner at her rolling 8pm meditation, so that one doesn't work well for me either.
So I do my meditation at 10pm EST, which is 9pm CST. Yes, I do this every night. So I am quite pleased if people would like to join me! We all have different times that work well for us.
You can do them for as long as you wish. I usually aim for a half hour with mine, but sometimes I do 10 minutes, and sometimes I do an hour. It all depends on what else is going on in my schedule.