Your specific billing date will depend on your delivery frequency and when you signed up. You have the option to receive a box every week, every 2 weeks or every 4 weeks.
You can edit your box frequency on your account under your 'Membership Settings' on the 'Deliveries' page. .When you make changes to this, the dates for your next box will change accordingly.
You can check your next payment date on the account homepage. The date shown next to your 'Edit by' date is when you will be charged for your next box as well as the deadline for editing the recipes in this box. From this date you will not be able to make any more changes to your box. The 'Expected' date on the right is the estimated delivery window.