../ dmsp_15_ephemeris_20210116.txt 22-Jun-2023 00:46 107991 dmsp_16_ephemeris_20210116.txt 22-Jun-2023 00:46 107919 dmsp_17_ephemeris_20210116.txt 22-Jun-2023 00:46 107924 dmsp_18_ephemeris_20210116.txt 22-Jun-2023 00:46 108072