../ dmsp_15_ephemeris_20170902.txt 22-Jun-2023 16:26 109622 dmsp_16_ephemeris_20170902.txt 22-Jun-2023 16:26 109609 dmsp_17_ephemeris_20170902.txt 22-Jun-2023 16:26 109717 dmsp_18_ephemeris_20170902.txt 22-Jun-2023 16:26 109630