../ dmsp_15_ephemeris_20181029.txt 22-Jun-2023 00:38 109531 dmsp_16_ephemeris_20181029.txt 22-Jun-2023 00:38 109655 dmsp_17_ephemeris_20181029.txt 22-Jun-2023 00:38 109489 dmsp_18_ephemeris_20181029.txt 22-Jun-2023 00:38 109440