../ dmsp_15_ephemeris_20211111.txt 22-Jun-2023 00:49 109387 dmsp_16_ephemeris_20211111.txt 22-Jun-2023 00:49 109475 dmsp_17_ephemeris_20211111.txt 22-Jun-2023 00:49 109374 dmsp_18_ephemeris_20211111.txt 22-Jun-2023 00:49 109466