../ dmsp_15_ephemeris_20121008.txt 22-Jun-2023 00:20 109673 dmsp_16_ephemeris_20121008.txt 22-Jun-2023 00:20 109527 dmsp_17_ephemeris_20121008.txt 22-Jun-2023 00:20 109499 dmsp_18_ephemeris_20121008.txt 22-Jun-2023 00:20 109554