../ dmsp_15_ephemeris_20210628.txt 22-Jun-2023 00:47 109524 dmsp_16_ephemeris_20210628.txt 22-Jun-2023 00:47 109531 dmsp_17_ephemeris_20210628.txt 22-Jun-2023 00:47 109643 dmsp_18_ephemeris_20210628.txt 22-Jun-2023 00:47 109566