../ dmsp_15_ephemeris_20121015.txt 22-Jun-2023 16:33 109581 dmsp_16_ephemeris_20121015.txt 22-Jun-2023 16:33 109546 dmsp_17_ephemeris_20121015.txt 22-Jun-2023 16:33 109590 dmsp_18_ephemeris_20121015.txt 22-Jun-2023 16:33 109500