../ dmsp_15_ephemeris_20121225.txt 22-Jun-2023 00:21 109429 dmsp_16_ephemeris_20121225.txt 22-Jun-2023 00:21 109284 dmsp_17_ephemeris_20121225.txt 22-Jun-2023 00:21 109353 dmsp_18_ephemeris_20121225.txt 22-Jun-2023 00:21 109462