../ dmsp_15_ephemeris_20120811.txt 22-Jun-2023 00:20 109548 dmsp_16_ephemeris_20120811.txt 22-Jun-2023 00:20 109602 dmsp_17_ephemeris_20120811.txt 22-Jun-2023 00:20 109688 dmsp_18_ephemeris_20120811.txt 22-Jun-2023 00:20 109715