../ dmsp_15_ephemeris_20210219.txt 22-Jun-2023 00:46 108074 dmsp_16_ephemeris_20210219.txt 22-Jun-2023 00:46 108082 dmsp_17_ephemeris_20210219.txt 22-Jun-2023 00:46 108103 dmsp_18_ephemeris_20210219.txt 22-Jun-2023 00:46 108128