Amazon Summer Time (AMST) was 3 hours behind Coordinated Universal Time (UTC). This time zone was in use during Daylight Saving Time in: South America.
See full time zone mapWhere and When is AMST Observed?
This time zone is no longer in use, but some locations may observe the same UTC offset (local time) under a different name.
Other Time Zones in UTC -3
Some time zones exist that have the same offset as AMST, but can be found under a different name: