Zohaib focused on strengthening the core date and time logic in the tursodatabase/turso repository, addressing a critical overflow issue that previously led to crashes during date calculations. Using Rust for backend development, he refactored the affected code to implement Option-based error handling, ensuring that arithmetic overflows are safely managed rather than causing panics. Zohaib updated related functions and tests to align with this new approach, enhancing the overall reliability of date and time operations. His work reduced the risk of invalid computations, improved code clarity, and contributed to more robust scheduling and data integrity throughout the codebase.