../ dmsp_15_ephemeris_20201219.txt 22-Jun-2023 16:34 109429 dmsp_16_ephemeris_20201219.txt 22-Jun-2023 16:34 109265 dmsp_17_ephemeris_20201219.txt 22-Jun-2023 16:34 109250 dmsp_18_ephemeris_20201219.txt 22-Jun-2023 16:34 109358