../ dmsp_15_ephemeris_20220412.txt 22-Jun-2023 00:50 109658 dmsp_16_ephemeris_20220412.txt 22-Jun-2023 00:50 109586 dmsp_17_ephemeris_20220412.txt 22-Jun-2023 00:50 109661 dmsp_18_ephemeris_20220412.txt 22-Jun-2023 00:50 109675