https://devzone.nordicsemi.com/f/nordic-q-a/6648/rtc-implementation-optimum-power-usageI would like to have track time of the day in my peripheral (s110)application. I understood that RTC0 is used by Soft device. RTC1 is used by app_timer application. I have already used app_timer functionality for various timeout conditions. Based onen-USTelligent Community 13Wed, 22 Apr 2015 18:15:37 GMThttps://devzone.nordicsemi.com/thread/23302?ContentTypeID=1Wed, 22 Apr 2015 18:15:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8d88b641-1604-4b2d-b193-61c3fb609f72Locky<p>You have two challenges:</p> <ol> <li> <p>Synchronizing. You need a way to start your app_timer in a calibrated way to assure you are synchronized with the outside world as you count. A BLE event or Button push can accomplish this</p> </li> <li> <p>Counting, At your calibrated synchronization event, just start an app_timer which is REPEATING and have handler function increment a variable. You can set your timeout to be either in minutes, 5minutes, 10minutes..etc what ever counting resolution you want.</p> </li> </ol><div style="clear:both;"></div>