../ dmsp_15_ephemeris_20121003.txt 22-Jun-2023 00:20 109562 dmsp_16_ephemeris_20121003.txt 22-Jun-2023 00:20 109598 dmsp_17_ephemeris_20121003.txt 22-Jun-2023 00:20 109693 dmsp_18_ephemeris_20121003.txt 22-Jun-2023 00:20 109594