https://devzone.nordicsemi.com/f/nordic-q-a/71230/cts-exact-time-accuracyHello! We&#39;re looking for a way to sync up several peripherals surrounding a central. Our idea was simple- have the central measure &#39;current time&#39; as near to a connection as possible, report the &#39;current time&#39; to the peripherals, and have the peripheralsen-USTelligent Community 13Wed, 03 Feb 2021 14:29:35 GMThttps://devzone.nordicsemi.com/thread/292719?ContentTypeID=1Wed, 03 Feb 2021 14:29:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1e5bf3a9-cb85-4dd9-be98-5b555bf6cc83Sigurd<p>Hi,</p> <p>You are correct. The minimum connection interval in BLE is 7.5ms as well, so&nbsp;you cannot expect to get a 4ms <span>accuracy&nbsp;</span>clock synchronized between all the nodes using this service.</p> <p>If you need a very accurate clock synchronized between the nodes, then you can find a solution for this here:&nbsp;<a href="https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/wireless-timer-synchronization-among-nrf5-devices">https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/wireless-timer-synchronization-among-nrf5-devices</a></p> <p></p><div style="clear:both;"></div>