Difference time between Singapore and Guyana in hours, minutes, and seconds is [ +12 hours ] with gregorian date today is Thursday 20th of August 2026 in Singaporean local time, Where the time now in Singapore is 15:21 PM and the time now in Guyana is 03:21 AM in Guyanese local time and the time comparison between Republic of Singapore and Guyana in greenwich time ( GMT ) where Singapore advanced about greenwich time ( GMT +08:00 ) while Guyana late for greenwich time ( GMT -04:00 ).