../ dmsp_15_ephemeris_20210607.txt 22-Jun-2023 16:35 109578 dmsp_16_ephemeris_20210607.txt 22-Jun-2023 16:35 109626 dmsp_17_ephemeris_20210607.txt 22-Jun-2023 16:35 109596 dmsp_18_ephemeris_20210607.txt 22-Jun-2023 16:35 109478