../ dmsp_15_ephemeris_20181113.txt 22-Jun-2023 00:38 109457 dmsp_16_ephemeris_20181113.txt 22-Jun-2023 00:38 109497 dmsp_17_ephemeris_20181113.txt 22-Jun-2023 00:38 109296 dmsp_18_ephemeris_20181113.txt 22-Jun-2023 00:38 109361