../ dmsp_15_ephemeris_20120507.txt 22-Jun-2023 00:19 109550 dmsp_16_ephemeris_20120507.txt 22-Jun-2023 00:19 109663 dmsp_17_ephemeris_20120507.txt 22-Jun-2023 00:19 109613 dmsp_18_ephemeris_20120507.txt 22-Jun-2023 00:19 109635