Explore network-based time synchronization in this 44-minute conference talk from RIOT Summit 2024. Gain insights into the importance of clock synchronization for various applications, from TLS certificate validation to coordinated robot movements. Discover different protocols available for time synchronization, their trade-offs in terms of accuracy and security, and learn how to implement them effectively. Presented by Tamme Dittrich, an embedded software engineer and Rust trainer at Tweede golf, who contributes to the pendulum project, working on modern implementations of NTP and PTP. Access accompanying slides for a comprehensive understanding of this crucial aspect of networked systems.