../ dmsp_15_ephemeris_20191211.txt 22-Jun-2023 00:42 109360 dmsp_16_ephemeris_20191211.txt 22-Jun-2023 00:42 109398 dmsp_17_ephemeris_20191211.txt 22-Jun-2023 00:42 109262 dmsp_18_ephemeris_20191211.txt 22-Jun-2023 00:42 109334