../ dmsp_15_ephemeris_20150720.txt 22-Jun-2023 16:16 109500 dmsp_16_ephemeris_20150720.txt 22-Jun-2023 16:16 109474 dmsp_17_ephemeris_20150720.txt 22-Jun-2023 16:16 109657 dmsp_18_ephemeris_20150720.txt 22-Jun-2023 16:16 109542 dmsp_19_ephemeris_20150720.txt 22-Jun-2023 16:16 109570