../ dmsp_15_ephemeris_20220708.txt 22-Jun-2023 00:52 109499 dmsp_16_ephemeris_20220708.txt 22-Jun-2023 00:52 109586 dmsp_17_ephemeris_20220708.txt 22-Jun-2023 00:52 109632 dmsp_18_ephemeris_20220708.txt 22-Jun-2023 00:52 109519