../ dmsp_15_ephemeris_20220801.txt 22-Jun-2023 00:52 109641 dmsp_16_ephemeris_20220801.txt 22-Jun-2023 00:52 109591 dmsp_17_ephemeris_20220801.txt 22-Jun-2023 00:52 109613 dmsp_18_ephemeris_20220801.txt 22-Jun-2023 00:52 109578