The date and time of the device is not correct
This behavior usually occurs when the device does not have access to the Internet. Android tries to connect to google.com at boot to verify connectivity. If this step fails, Android does not connect to the NTP server. Android then reverts back to the factory timestamp.
To fix this issue, make sure that the device is connected to the Internet. If the device always displays "No Wifi", refer to this article for possible solutions: The Wifi is disabled (no network) when I boot the device
> Note: If you are using Genymotion Desktop with QEMU (Linux, macOS), this may occur when using quick boot. Try a coold boot instead. See Genymotion Desktop on-line documentation.