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How I can retrieve the granule starting (or ending) time from the name of the granules?

April 26, 2017ending granule granules time

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How I can retrieve the granule starting (or ending) time from the name of the granules?

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A. In the granule name: AIRS.2007.01.01.006.L2.RetStd.v5.0.14.0.G07193004415.hdf the code is AIRS.YYYY.MM.DD.GGG.LEVEL.PRODUCT.VERSION_STRING.Ftag.hdf where YYYY is the year of the data, 2007 MM is the month of the data, 01 (i.e., January) DD is the day of the data, 01 (i.e., the first day in Jan) LEVEL is L2, i.e. Level 2 PRODUCT is RetStd, here the standard product using AIRS/AMSU VERSION_STRING is V5.0.14.0, F is the processing facility identifier, here “G” stands for GSFC tag is the run tag, which ensures the pointer to the file is unique. It is the processing time, not the time at which the instrument obtained the data, and thus not useful for your purposes. If the data are run through the processing stream again, this field changes. You must crack open the data file to get the UT start and stop for the granule measurement by the instrument. Those times are not encoded into the granule name.