https://devzone.nordicsemi.com/f/nordic-q-a/55344/at-cclk-returns-incorrect-time-after-cellular-reconnectHi, I noticed something strange while developing with the nRF9160 modem&#39;s RTC. Here&#39;s the sequence of events Connect cellular Get time from NTP server and initialize modem RTC with it. AT+CCLK= &quot;19/12/06,20:20:10+00&quot; Disconnect cellular Readen-USTelligent Community 13Mon, 09 Dec 2019 12:40:05 GMThttps://devzone.nordicsemi.com/thread/224427?ContentTypeID=1Mon, 09 Dec 2019 12:40:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:feabcc51-3305-4d1b-963a-7e58937b2472Simonr<p>Hi Jeff</p> <p>The <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fref_at_commands%2FREF%2Fat_commands%2Fmob_termination_ctrl_status%2Fcclk_read.html">AT+CCLK command</a>&nbsp;returns the GMT time and the difference to your local time in quarters of an hour. So, 20:20:19-20 means that your local time is 20:20 minus 20 quarters (5 hours), so 15:20 (3:20 PM). I agree that this is not an expected way of getting the time, but the documentation states that it is done this way, so it is not a bug.&nbsp;</p> <p>You can check out the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/include/modem_info.html?highlight=modem_info_date_time">modem_info library</a> in order to get the mobile network time and date, as well as a multitude of other information from the modem.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>