âSentry. A Sentry is a modified system monitor security program tasked with maintaining order on the Grid. Sentries wear standard black garb with red circuitry, and have black visored helmets with an open lower face below the visor. They possess identity discs, but most prefer to fight with their staffs.
Current Greenwich Mean Time (GMT) The Time Now is a reliable tool when traveling, calling or researching. The Time Now provides accurate (US network of cesium clocks) synchronized Greenwich Mean Time (GMT).
Converting GMT to EST. This time zone converter lets you visually and very quickly convert GMT to EST and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column... and done! GMT stands for Greenwich Mean Time. EST is known as Eastern Standard Time. EST is 4 hours behind GMT.