../ dmsp_15_ephemeris_20210618.txt 22-Jun-2023 17:02 109540 dmsp_16_ephemeris_20210618.txt 22-Jun-2023 17:02 109604 dmsp_17_ephemeris_20210618.txt 22-Jun-2023 17:03 109638 dmsp_18_ephemeris_20210618.txt 22-Jun-2023 17:03 109434