../ dmsp_15_ephemeris_20221220.txt 22-Jun-2023 00:54 109409 dmsp_16_ephemeris_20221220.txt 22-Jun-2023 00:54 109416 dmsp_17_ephemeris_20221220.txt 22-Jun-2023 00:54 109357 dmsp_18_ephemeris_20221220.txt 22-Jun-2023 00:54 109274