Download the attachment below for a table that shows the IRB meeting dates for 2017.pdf, including the deadlines for submitting new protocols and for other submissions (continuing review, adverse events, etc).
There is also an attachment explaining the reason behind the deadlines, and giving suggestions for when you should get your submissions in BEFORE the deadlines. PLEASE REVIEW THIS CAREFULLY!
Note that these dates and deadlines DO NOT APPLY to expedited review, exempt review, and protocols that will be sent to an external or central IRB. These submissions are processed as they come in.