../ dmsp_15_ephemeris_20210602.txt 22-Jun-2023 00:47 109636 dmsp_16_ephemeris_20210602.txt 22-Jun-2023 00:47 109532 dmsp_17_ephemeris_20210602.txt 22-Jun-2023 00:47 109584 dmsp_18_ephemeris_20210602.txt 22-Jun-2023 00:47 109573