../ dmsp_15_ephemeris_20190824.txt 22-Jun-2023 00:41 109605 dmsp_16_ephemeris_20190824.txt 22-Jun-2023 00:41 109603 dmsp_17_ephemeris_20190824.txt 22-Jun-2023 00:41 109651 dmsp_18_ephemeris_20190824.txt 22-Jun-2023 00:41 109570