../ dmsp_15_ephemeris_20121229.txt 22-Jun-2023 00:21 109459 dmsp_16_ephemeris_20121229.txt 22-Jun-2023 00:21 109265 dmsp_17_ephemeris_20121229.txt 22-Jun-2023 00:21 109371 dmsp_18_ephemeris_20121229.txt 22-Jun-2023 00:21 109408