../ dmsp_15_ephemeris_20200522.txt 22-Jun-2023 16:33 109672 dmsp_16_ephemeris_20200522.txt 22-Jun-2023 16:33 109500 dmsp_17_ephemeris_20200522.txt 22-Jun-2023 16:33 109588 dmsp_18_ephemeris_20200522.txt 22-Jun-2023 16:33 109445