Difference time between Guyana and Singapore in hours, minutes, and seconds is [ -12 hours ] with gregorian date today is Monday 9th of March 2026 in Guyanese local time, Where the time now in Guyana is 18:21 PM and the time now in Singapore is 06:21 AM in Singaporean local time and the time comparison between Co-operative Republic of Guyana and Singapore in greenwich time ( GMT ) where Guyana late for greenwich time ( GMT -04:00 ) while Singapore advanced about greenwich time ( GMT +08:00 ).