../ dmsp_15_ephemeris_20210622.txt 22-Jun-2023 16:35 109674 dmsp_16_ephemeris_20210622.txt 22-Jun-2023 16:35 109502 dmsp_17_ephemeris_20210622.txt 22-Jun-2023 16:35 109579 dmsp_18_ephemeris_20210622.txt 22-Jun-2023 16:35 109527