../ dmsp_15_ephemeris_20220514.txt 22-Jun-2023 16:38 109530 dmsp_16_ephemeris_20220514.txt 22-Jun-2023 16:38 109548 dmsp_17_ephemeris_20220514.txt 22-Jun-2023 16:38 109665 dmsp_18_ephemeris_20220514.txt 22-Jun-2023 16:38 109561