../ dmsp_15_ephemeris_20191222.txt 22-Jun-2023 00:42 109447 dmsp_16_ephemeris_20191222.txt 22-Jun-2023 00:42 109353 dmsp_17_ephemeris_20191222.txt 22-Jun-2023 00:42 109341 dmsp_18_ephemeris_20191222.txt 22-Jun-2023 00:42 109370