../ dmsp_15_ephemeris_20190123.txt 22-Jun-2023 00:39 108069 dmsp_16_ephemeris_20190123.txt 22-Jun-2023 00:39 107967 dmsp_17_ephemeris_20190123.txt 22-Jun-2023 00:39 107938 dmsp_18_ephemeris_20190123.txt 22-Jun-2023 00:39 107929