You sync to the NIST time servers (sample code available via linked page) via a cron job that invokes the script, whenever the IoT device is rebooted. 1. NIST

You sync to the NIST time servers (sample code available via linked page) via a cron job that invokes the script, whenever the IoT device is rebooted. 1. NIST Time Server Page: https://www.nist.gov/pml/time-and-frequency-division/services/internet-time-service-its https://www.nist.gov/pml/time-and-frequency-division/service... 2. Crontab @reboot function: https://superuser.com/questions/708149/how-to-use-reboot-in-etc-cron-d https://superuser.com/questions/708149/how-to-use-reboot-in-... Make sure to always cite your references by comments. This is useful in case parts of your code become unintentionally obsolete. This also helps you and others proofread your work.