../ dmsp_15_ephemeris_20120830.txt 22-Jun-2023 00:20 109621 dmsp_16_ephemeris_20120830.txt 22-Jun-2023 00:20 109693 dmsp_17_ephemeris_20120830.txt 22-Jun-2023 00:20 109859 dmsp_18_ephemeris_20120830.txt 22-Jun-2023 00:20 109596