Says my Web host:
Our Network Operations team will be performing a proactive scheduled maintenance starting at 10:30PM Pacific Standard Time on February 8th, 2017 in order to further improve network reliability. This is expected to last up to four hours, and will result in server unavailability of up to 45 minutes.
Once the maintenance has begun, please avoid adding or modifying databases on your MySQL server, as we will be unable to process any database-related changes during this time (and those changes may be lost).
That’s half past midnight here in Central time. I’m hoping I’m asleep by then and won’t even notice the downtime.