../ dmsp_15_ephemeris_20180130.txt 22-Jun-2023 00:36 108002 dmsp_16_ephemeris_20180130.txt 22-Jun-2023 00:36 108108 dmsp_17_ephemeris_20180130.txt 22-Jun-2023 00:36 108062 dmsp_18_ephemeris_20180130.txt 22-Jun-2023 00:36 107929