../ dmsp_15_ephemeris_20130711.txt 22-Jun-2023 16:35 109403 dmsp_16_ephemeris_20130711.txt 22-Jun-2023 16:35 109594 dmsp_17_ephemeris_20130711.txt 22-Jun-2023 16:35 109666 dmsp_18_ephemeris_20130711.txt 22-Jun-2023 16:35 109500