../ dmsp_15_ephemeris_20120222.txt 22-Jun-2023 16:31 108143 dmsp_16_ephemeris_20120222.txt 22-Jun-2023 16:31 108058 dmsp_17_ephemeris_20120222.txt 22-Jun-2023 16:31 108248 dmsp_18_ephemeris_20120222.txt 22-Jun-2023 16:31 108271