../ dmsp_15_ephemeris_20180602.txt 22-Jun-2023 00:37 109501 dmsp_16_ephemeris_20180602.txt 22-Jun-2023 00:37 109534 dmsp_17_ephemeris_20180602.txt 22-Jun-2023 00:37 109527 dmsp_18_ephemeris_20180602.txt 22-Jun-2023 00:37 109545