It seems like the recommendation is to renew NEXUS as early as possible?
NEXUS expiry: 1 August 2019
Submit for NEXUS renewal: 1 or 2 August 2018
Approval for NEXUS renewal: 20 November 2018 (let's assumed as such)
Will the new 5 years NEXUS clock begins on 20 November 2018, or will it begin on 2 August 2019? In other words, do i lose "some days or months" from previous 5 years validity if I apply and got approved too early?