Fix the relative uptime calculation
Fix the relative uptime calculation

starksm64/NativeRaspberryPiBeaconParser,starksm64/NativeRaspberryPiBeaconParser,starksm64/NativeRaspberryPiBeaconParser,starksm64/NativeRaspberryPiBeaconParser,starksm64/NativeRaspberryPiBeaconParser