../ dmsp_15_ephemeris_20210228.txt 22-Jun-2023 17:02 108161 dmsp_16_ephemeris_20210228.txt 22-Jun-2023 17:02 108157 dmsp_17_ephemeris_20210228.txt 22-Jun-2023 17:02 108059 dmsp_18_ephemeris_20210228.txt 22-Jun-2023 17:02 108072