First— NTP does not use HTTPS. It uses UDP as a transport since on-time delivery matters more than missed deliveries. Second— inaccurate time really is only a

First— NTP does not use HTTPS. It uses UDP as a transport since on-time delivery matters more than missed deliveries. Second— inaccurate time really is only a “problem” if it is not accurate enough. For the purposes of TLS, the current typical time error seems to be well within the tolerance of most communications. There are plenty of people talking about time synchronization if you know where to look. If you really need something more accurate than NTP, use a PCI card that gathers time from GPS or using a time signal radio broadcast (eg, NIST’s).