../ dmsp_15_ephemeris_20151201.txt 22-Jun-2023 16:21 109441 dmsp_16_ephemeris_20151201.txt 22-Jun-2023 16:21 109311 dmsp_17_ephemeris_20151201.txt 22-Jun-2023 16:21 109358 dmsp_18_ephemeris_20151201.txt 22-Jun-2023 16:21 109380 dmsp_19_ephemeris_20151201.txt 22-Jun-2023 16:21 109305