../ dmsp_15_ephemeris_20210208.txt 22-Jun-2023 16:28 108205 dmsp_16_ephemeris_20210208.txt 22-Jun-2023 16:28 108022 dmsp_17_ephemeris_20210208.txt 22-Jun-2023 16:28 108040 dmsp_18_ephemeris_20210208.txt 22-Jun-2023 16:28 108101