../ dmsp_15_ephemeris_20101203.txt 22-Jun-2023 00:16 109170 dmsp_16_ephemeris_20101203.txt 22-Jun-2023 00:16 109303 dmsp_17_ephemeris_20101203.txt 22-Jun-2023 00:16 109355 dmsp_18_ephemeris_20101203.txt 22-Jun-2023 00:16 109439