../ dmsp_15_ephemeris_20190123.txt 22-Jun-2023 16:30 108069 dmsp_16_ephemeris_20190123.txt 22-Jun-2023 16:30 107967 dmsp_17_ephemeris_20190123.txt 22-Jun-2023 16:30 107938 dmsp_18_ephemeris_20190123.txt 22-Jun-2023 16:30 107929