../ dmsp_15_ephemeris_20190626.txt 22-Jun-2023 16:56 109416 dmsp_16_ephemeris_20190626.txt 22-Jun-2023 16:56 109619 dmsp_17_ephemeris_20190626.txt 22-Jun-2023 16:56 109629 dmsp_18_ephemeris_20190626.txt 22-Jun-2023 16:56 109571