Draft: Needs testing and verification.
@gregq FYI
This seems to work both through rdr2l0 and rdrgen in that it produces valid RDRs.
I was not able to compare them against what RT-STPS v7 is putting out because rdrgen seems to put out 5 additional spacecraft granules over what RT-STPS is producing for a VIIRS RDR. I'm guessing that RT-STPS is just dropping spacecraft granules that don't overlap the science data or something.
So, this needs a bit more thought and verification
Closes #6 (closed)