../ dmsp_15_ephemeris_20170411.txt 22-Jun-2023 00:34 109674 dmsp_16_ephemeris_20170411.txt 22-Jun-2023 00:34 109691 dmsp_17_ephemeris_20170411.txt 22-Jun-2023 00:34 109744 dmsp_18_ephemeris_20170411.txt 22-Jun-2023 00:34 109641