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<ows:Identifier>Time</ows:Identifier>
<ows:UOM>ISO8601</ows:UOM>
<ows:Title>Time</ows:Title>
<Default>2019-09-04T00:00:00Z</Default>
<Value>2019-09-04T00:00:00Z/2019-09-13T21:00:00Z/PT1800S<PT10800S</Value>
</Dimension>
As you can see, the Value tag now contains three values separated by "/" - the start_timestamp, end_timestamp, and timestep_duration. The duration is specified as an ISO8601 duration, see https://en.wikipedia.org/wiki/ISO_8601#Durations. For more information on GIBS see https://developer.earthdata.nasa.gov/gibs/gibs-api-for-developers#GIBSAPIforDevelopers-TimeDimension.
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