../ dmsp_15_ephemeris_20201229.txt 22-Jun-2023 16:34 109370 dmsp_16_ephemeris_20201229.txt 22-Jun-2023 16:34 109400 dmsp_17_ephemeris_20201229.txt 22-Jun-2023 16:34 109301 dmsp_18_ephemeris_20201229.txt 22-Jun-2023 16:34 109330