../ dmsp_15_ephemeris_20200922.txt 22-Jun-2023 16:34 109570 dmsp_16_ephemeris_20200922.txt 22-Jun-2023 16:34 109622 dmsp_17_ephemeris_20200922.txt 22-Jun-2023 16:34 109616 dmsp_18_ephemeris_20200922.txt 22-Jun-2023 16:34 109575