../ dmsp_15_ephemeris_20120420.txt 22-Jun-2023 00:19 109688 dmsp_16_ephemeris_20120420.txt 22-Jun-2023 00:19 109611 dmsp_17_ephemeris_20120420.txt 22-Jun-2023 00:19 109624 dmsp_18_ephemeris_20120420.txt 22-Jun-2023 00:19 109591