../ dmsp_15_ephemeris_20121123.txt 22-Jun-2023 00:21 109564 dmsp_16_ephemeris_20121123.txt 22-Jun-2023 00:21 109344 dmsp_17_ephemeris_20121123.txt 22-Jun-2023 00:21 109396 dmsp_18_ephemeris_20121123.txt 22-Jun-2023 00:21 109378