Worked on improving date and time parsing reliability in the uutils/parse_datetime repository, focusing on robust error handling and comprehensive unit testing. Addressed a parsing bug by refactoring the error mode from Cut to Backtrack, enabling the parser to explore alternative paths when encountering errors rather than terminating prematurely. This approach enhanced correctness, particularly in edge cases involving time values with decimal seconds. Expanded the test suite to validate parsing of seconds with varying decimal precision, ensuring greater coverage and reliability. The work was implemented in Rust, leveraging skills in error handling, parsing strategies, and test-driven development to strengthen code quality.