../ dmsp_15_ephemeris_20171212.txt 22-Jun-2023 16:27 109482 dmsp_16_ephemeris_20171212.txt 22-Jun-2023 16:27 109376 dmsp_17_ephemeris_20171212.txt 22-Jun-2023 16:27 109289 dmsp_18_ephemeris_20171212.txt 22-Jun-2023 16:27 109211