../ dmsp_15_ephemeris_20210424.txt 22-Jun-2023 00:46 109609 dmsp_16_ephemeris_20210424.txt 22-Jun-2023 00:46 109648 dmsp_17_ephemeris_20210424.txt 22-Jun-2023 00:46 109595 dmsp_18_ephemeris_20210424.txt 22-Jun-2023 00:46 109624