../ dmsp_15_ephemeris_20210417.txt 22-Jun-2023 17:02 109701 dmsp_16_ephemeris_20210417.txt 22-Jun-2023 17:02 109724 dmsp_17_ephemeris_20210417.txt 22-Jun-2023 17:02 109674 dmsp_18_ephemeris_20210417.txt 22-Jun-2023 17:02 109570