../ dmsp_15_ephemeris_20181016.txt 22-Jun-2023 00:38 109482 dmsp_16_ephemeris_20181016.txt 22-Jun-2023 00:38 109586 dmsp_17_ephemeris_20181016.txt 22-Jun-2023 00:38 109619 dmsp_18_ephemeris_20181016.txt 22-Jun-2023 00:38 109564