I have a number of RPi2 boxes upgraded from OE 6.0.3 to LE 7.0.2.
Some of them and not all of the time, after reboot are initialized with a date on June 2016! My NTP servers are gr.pool.ntp.org, 1.gr.pool.ntp.org and 2.gr.pool.ntp.org
I've made some ntpdate -q queries on them, but all report the current time/date. I don't know what to make of this issue, I'll try to get debug logs and attach them here.
This is an intermittent problem, so it might be a while till I upload these logs here. In the meantime, if someone has experience anything of the like, please feel free to share.