Worked on the Jellyfin/Jellyfin repository to improve the consistency of time-related data in XmlTv listings by standardizing test data to use UTC date formats. Focused on software testing and unit testing in C#, the work involved updating and aligning test suites to ensure accurate handling of time zones across listings. By fixing a bug related to UTC standards in test data, the changes enhanced the reliability of time-sensitive features and reduced the risk of scheduling or display errors for end users. This targeted quality improvement strengthened the overall robustness of the codebase, particularly in scenarios involving cross-time-zone data processing.