../ dmsp_15_ephemeris_20120706.txt 22-Jun-2023 00:20 109426 dmsp_16_ephemeris_20120706.txt 22-Jun-2023 00:20 109724 dmsp_17_ephemeris_20120706.txt 22-Jun-2023 00:20 109597 dmsp_18_ephemeris_20120706.txt 22-Jun-2023 00:20 109498