../ dmsp_15_ephemeris_20191204.txt 22-Jun-2023 00:42 109320 dmsp_16_ephemeris_20191204.txt 22-Jun-2023 00:42 109386 dmsp_17_ephemeris_20191204.txt 22-Jun-2023 00:42 109233 dmsp_18_ephemeris_20191204.txt 22-Jun-2023 00:42 109440