That's something I've always wondered with this - the Velocity account page shows "Additional Status Credits (or sectors) required to requalify for (insert status level) by xyz date" and the Ts & Cs state:
22.5 Status Credits Required to Maintain a Membership Level
On each Review Date, if the total number of Status Credits earned and Eligible Sectors flown during the previous 365 days meets the criteria in clause 22.1.4 to maintain a Member’s current Membership Level, then they will maintain that Membership Level for the Benefit Period after the Review Date.
The "during the previous 365 days" seems to give the indication that the eligible SCs and sectors must be flown up to and including the day before the review date, so I was always curious as to whether this was the case or if SCs earned/sectors flown on the review date counted towards the current year or the following year? To be on the safe side, I've never flown on my review date LOL.