Generate a sequence of time values based on the GEOS-CF collection.
Note
GEOS-CF hourly values are observed on the hour (ie. 0000 = 12:00:00 AM, 0100 = 01:00:00 AM) or the half hour (ie. 0030 = 12:30:00 AM, 0130 = 01:30:00 AM). Typically, 2-dimensional collections (latitude and longitude only) utilize half hour, and 3-dimensional collections (latitude, longitude, and time) utilize hour.