Difference time between United States of America and Singapore in hours, minutes, and seconds is [ -12 hours ] with gregorian date today is Saturday 13th of September 2025 in American local time, Where the time now in United States of America is 15:20 PM and the time now in Singapore is 03:20 AM in Singaporean local time and the time comparison between United States of America and Singapore in greenwich time ( GMT ) where United States of America late for greenwich time ( GMT -04:00 ) while Singapore advanced about greenwich time ( GMT +08:00 ).