../ dmsp_15_ephemeris_20111014.txt 22-Jun-2023 00:18 109571 dmsp_16_ephemeris_20111014.txt 22-Jun-2023 00:18 109593 dmsp_17_ephemeris_20111014.txt 22-Jun-2023 00:18 109598 dmsp_18_ephemeris_20111014.txt 22-Jun-2023 00:18 109608