ART (Argentina Time) is one of the well-known names of UTC-3 time zone which is 3h. behind of UTC (Coordinated Universal Time).The time offset from UTC can be written as -03:00. … Chile Summer Time: FKST: Falkland Islands Summer Time: GFT: French Guiana Time: PMST: Saint Pierre and Miquelon Standard Time: PYST: Paraguay Summer Time: ROTT: