../ dmsp_15_ephemeris_20110312.txt 22-Jun-2023 16:11 108202 dmsp_16_ephemeris_20110312.txt 22-Jun-2023 16:11 108229 dmsp_17_ephemeris_20110312.txt 22-Jun-2023 16:11 108145 dmsp_18_ephemeris_20110312.txt 22-Jun-2023 16:11 108236