../ dmsp_15_ephemeris_20110106.txt 22-Jun-2023 00:16 106577 dmsp_16_ephemeris_20110106.txt 22-Jun-2023 00:16 106397 dmsp_17_ephemeris_20110106.txt 22-Jun-2023 00:16 106464 dmsp_18_ephemeris_20110106.txt 22-Jun-2023 00:16 106613