../ dmsp_15_ephemeris_20211011.txt 22-Jun-2023 00:48 109584 dmsp_16_ephemeris_20211011.txt 22-Jun-2023 00:48 109676 dmsp_17_ephemeris_20211011.txt 22-Jun-2023 00:48 109669 dmsp_18_ephemeris_20211011.txt 22-Jun-2023 00:48 109603