../ dmsp_15_ephemeris_20130430.txt 22-Jun-2023 16:34 109600 dmsp_16_ephemeris_20130430.txt 22-Jun-2023 16:34 109613 dmsp_17_ephemeris_20130430.txt 22-Jun-2023 16:34 109730 dmsp_18_ephemeris_20130430.txt 22-Jun-2023 16:34 109666