import java.time.ZoneId
import java.time.ZonedDateTime

[
 "a": ZonedDateTime.parse("2014-01-01T09:00:00-08:00"),
 "b": ZonedDateTime.parse("2014-01-01T09:00:00-08:00"),
 "c": ZonedDateTime.parse("2014-01-01T09:00:00-08:00")
]