How is Boot Time measured (startup optimizer)?

tmazz78

I'm kind of curious how Bitdefender arrives at number reflected in the boot time.

Currently it is telling me my boot time is 1:02. I've measured it myself by turning off the PC, booting to windows and waiting for all services in Startup to be loaded. The time I've measured seems to be much less, as I expected it to be since my OS is loaded on an SSD and I have relatively few programs loading at startup.

Thanks!