../ dmsp_15_ephemeris_20211202.txt 22-Jun-2023 00:49 109339 dmsp_16_ephemeris_20211202.txt 22-Jun-2023 00:49 109358 dmsp_17_ephemeris_20211202.txt 22-Jun-2023 00:49 109261 dmsp_18_ephemeris_20211202.txt 22-Jun-2023 00:49 109374