../ dmsp_15_ephemeris_20210708.txt 22-Jun-2023 16:36 109500 dmsp_16_ephemeris_20210708.txt 22-Jun-2023 16:36 109563 dmsp_17_ephemeris_20210708.txt 22-Jun-2023 16:36 109595 dmsp_18_ephemeris_20210708.txt 22-Jun-2023 16:36 109569