../ dmsp_15_ephemeris_20220713.txt 22-Jun-2023 16:39 109584 dmsp_16_ephemeris_20220713.txt 22-Jun-2023 16:39 109575 dmsp_17_ephemeris_20220713.txt 22-Jun-2023 16:39 109638 dmsp_18_ephemeris_20220713.txt 22-Jun-2023 16:39 109508