This behavior usually occurs when the device does not have access to the Internet: at boot, Android tries to connect to google.com to verify the connectivity. If this step fails, Android does not connect to the NTP server and retrieve the time & date, and it reverts back to the factory timestamp.
To fix this, make sure that the device is connected to the Internet. If the device always displays "No Wifi", refer 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.
Related articles
- The Wifi is disabled (no network) when I boot the device
- Which Android versions are available?
- Is Genymotion free?
- Can I send or receive calls and text messages from a real phone or tablet?
- The virtual device crashes, freezes or fails to boot on Windows