../ dmsp_15_ephemeris_20230307.txt 22-Jun-2023 00:55 108274 dmsp_16_ephemeris_20230307.txt 22-Jun-2023 00:55 108112 dmsp_17_ephemeris_20230307.txt 22-Jun-2023 00:55 108106 dmsp_18_ephemeris_20230307.txt 22-Jun-2023 00:55 108104