<div dir="ltr"><div>Dear Hesham,</div><div><br></div><div>May I ask for what reason do you need the satellites to be synchronized in time? What application is requiring this? Earth observation? Then, go for GNSS-based time synchronization, as done by EO satellites in LEO: <a href="https://navi.ion.org/content/69/3/navi.531">https://navi.ion.org/content/69/3/navi.531</a></div><div><br></div><div>"GNSS signals could even be used for reliable navigation in lunar orbit", so also for time synchronization: <a href="https://www.nasa.gov/missions/tech-demonstration/nasa-navigation-tech-shows-timing-really-is-everything">https://www.nasa.gov/missions/tech-demonstration/nasa-navigation-tech-shows-timing-really-is-everything</a></div><div><br></div><div>It seems that as long as your device can have a GNSS receiver, that's the best way to keep it time-synchronized. Is there anything preventing the use of GNSS on your intended application?<br></div><div><br></div><div><a href="https://lists.bufferbloat.net/pipermail/starlink/2024-March/002605.html">https://lists.bufferbloat.net/pipermail/starlink/2024-March/002605.html</a></div><div><br></div><div>Regards,</div><div><br></div><div>David<br></div></div>