../ dmsp_15_ephemeris_20120718.txt 22-Jun-2023 00:20 109556 dmsp_16_ephemeris_20120718.txt 22-Jun-2023 00:20 109659 dmsp_17_ephemeris_20120718.txt 22-Jun-2023 00:20 109722 dmsp_18_ephemeris_20120718.txt 22-Jun-2023 00:20 109646