../ dmsp_15_ephemeris_20121129.txt 22-Jun-2023 00:21 109427 dmsp_16_ephemeris_20121129.txt 22-Jun-2023 00:21 109286 dmsp_17_ephemeris_20121129.txt 22-Jun-2023 00:21 109288 dmsp_18_ephemeris_20121129.txt 22-Jun-2023 00:21 109295