../ dmsp_15_ephemeris_20210926.txt 22-Jun-2023 00:48 109748 dmsp_16_ephemeris_20210926.txt 22-Jun-2023 00:48 109738 dmsp_17_ephemeris_20210926.txt 22-Jun-2023 00:48 109632 dmsp_18_ephemeris_20210926.txt 22-Jun-2023 00:48 109648