../ dmsp_15_ephemeris_20170523.txt 22-Jun-2023 00:34 109398 dmsp_16_ephemeris_20170523.txt 22-Jun-2023 00:34 109575 dmsp_17_ephemeris_20170523.txt 22-Jun-2023 00:34 109534 dmsp_18_ephemeris_20170523.txt 22-Jun-2023 00:34 109550