Igor Antropov addressed a critical data correctness issue in the mathworks/arrow repository by fixing the conversion of negative timestamps to date types within the FlightSQL ODBC component. Using C++ and leveraging expertise in data handling and timestamp conversion, Igor implemented a focused code patch that ensures accurate representation of dates before the Unix epoch, which is essential for historical data processing. The solution included updating and extending test coverage to prevent future regressions, with all changes validated through comprehensive regression tests. This work improved the reliability and interoperability of FlightSQL ODBC, particularly for analytics involving pre-epoch historical dates.