Sentinel is saying that the Database Version is 11/12/2017 and when I check for one it says it is up to date. Was there no update for it yesterday?
Uniden issues updates on Mondays, based on database information as of the previous day (Sunday). So, 11/12, last Sunday's data, is the latest. The next update should be out tomorrow morning or mid-day, and should show a date of 11/19/2017.
Whistler issues updates on Saturdays, based on information through the previous day. Maybe that's why you were thinking you missed an update.