https://devzone.nordicsemi.com/f/nordic-q-a/71548/how-to-sync-rtc-with-current-time-service-to-generate-timestampsHello, I am trying to get acquire the accelerometer data every 4 hours for a sample duration of 60secs. These data are stored in RAM and on ble connection with the mobile app the data is sent to mobile over BLE. I am using Current time service to geten-USTelligent Community 13Fri, 12 Feb 2021 13:30:15 GMThttps://devzone.nordicsemi.com/thread/294170?ContentTypeID=1Fri, 12 Feb 2021 13:30:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7be5f487-a682-4a66-bfb2-0fc34e0efc93Hung Bui<p>Hi Padmashree,&nbsp;</p> <p>You can have a look at this <a href="https://devzone.nordicsemi.com/f/nordic-q-a/610/sample-code-for-rtc-to-update-current-time-of-device">case.</a></p> <p>As mentioned in the case, you can for example create an app_timer that triggers an event&nbsp; every 1 second and you can keep track of the time using that. Please get familiar with the app_timer. The example of how to use it can be found in most of our BLE example , we use the timer to notify the battery level every 2 seconds</p><div style="clear:both;"></div>