../ dmsp_15_ephemeris_20150917.txt 22-Jun-2023 16:16 109637 dmsp_16_ephemeris_20150917.txt 22-Jun-2023 16:16 109506 dmsp_17_ephemeris_20150917.txt 22-Jun-2023 16:16 109686 dmsp_18_ephemeris_20150917.txt 22-Jun-2023 16:16 109681 dmsp_19_ephemeris_20150917.txt 22-Jun-2023 16:16 109746