../ dmsp_15_ephemeris_20220917.txt 22-Jun-2023 00:53 109648 dmsp_16_ephemeris_20220917.txt 22-Jun-2023 00:53 109676 dmsp_17_ephemeris_20220917.txt 22-Jun-2023 00:53 109549 dmsp_18_ephemeris_20220917.txt 22-Jun-2023 00:53 109693