../ dmsp_15_ephemeris_20220217.txt 22-Jun-2023 00:50 108198 dmsp_16_ephemeris_20220217.txt 22-Jun-2023 00:50 108153 dmsp_17_ephemeris_20220217.txt 22-Jun-2023 00:50 108118 dmsp_18_ephemeris_20220217.txt 22-Jun-2023 00:50 108197