Great Question! Generally if you order before the 10th or so you will most definately reserve your spot for the current month. It really just depends on when I run out of stock.
I notify you guys 2 ways!
I update the webpage when the subscriptions close for the month and the clock resets for the next month. see here: https://magickalfolkshop.com/pages/seasonalseries
I also post an update on Facebook & Instagram Stories then pin the update to my highlights under the "2019 updates". It will be dated so you know the subscriptions have sold out. If you preordered for the next month, your renewal date will be updated so your not charged twice!