../ dmsp_15_ephemeris_20220401.txt 22-Jun-2023 16:31 108292 dmsp_16_ephemeris_20220401.txt 22-Jun-2023 16:31 108220 dmsp_17_ephemeris_20220401.txt 22-Jun-2023 16:31 108045 dmsp_18_ephemeris_20220401.txt 22-Jun-2023 16:31 108254