../ dmsp_15_ephemeris_20211223.txt 22-Jun-2023 16:37 109325 dmsp_16_ephemeris_20211223.txt 22-Jun-2023 16:37 109327 dmsp_17_ephemeris_20211223.txt 22-Jun-2023 16:37 109297 dmsp_18_ephemeris_20211223.txt 22-Jun-2023 16:37 109316