Singapore (SGT, UTC+8) is 13 hours ahead of Texas (CDT, UTC-5) during US Daylight Saving (Mar–Nov).
During US Standard Time (Nov–Mar): Texas on CST (UTC-6) → 14-hour gap.
Singapore does not observe DST.
Practical Example: A 9:00 AM Singapore meeting = 8:00 PM (CDT) / 7:00 PM (CST) previous day in Texas. Schedule accordingly.