Difference time between Singapore and Guinea Bissau in hours, minutes, and seconds is [ +8 hours ] with gregorian date today is Friday 26th of December 2025 in Singaporean local time, Where the time now in Singapore is 09:17 AM and the time now in Guinea Bissau is 01:17 AM in Guinea Bissauan local time and the time comparison between Republic of Singapore and Guinea Bissau in greenwich time ( GMT ) where Singapore advanced about greenwich time ( GMT +08:00 ) while Guinea Bissau he has the same greenwich time ( GMT +00:00 ).