Difference time between Guyana and Zambia in hours, minutes, and seconds is [ -6 hours ] with gregorian date today is Friday 19th of September 2025 in Guyanese local time, Where the time now in Guyana is 00:29 AM and the time now in Zambia is 06:29 AM in Zambian local time and the time comparison between Co-operative Republic of Guyana and Zambia in greenwich time ( GMT ) where Guyana late for greenwich time ( GMT -04:00 ) while Zambia advanced about greenwich time ( GMT +02:00 ).