Worked on the Zephyr project repository to enhance observability and tracing for embedded real-time systems by implementing 64-bit timestamps for tracing events. This update addressed the overflow limitations of 32-bit timestamps, enabling longer and more reliable trace windows for long-running tasks. The work focused on improving debugging capabilities and performance analysis by allowing developers to capture extended execution traces without data loss. All changes were developed in C, following established Zephyr tracing subsystem patterns and including thorough documentation. No major bug fixes were reported during this period, with efforts concentrated on feature development and code quality within the tracing subsystem.