../ dmsp_15_ephemeris_20110501.txt 22-Jun-2023 00:17 109449 dmsp_16_ephemeris_20110501.txt 22-Jun-2023 00:17 109695 dmsp_17_ephemeris_20110501.txt 22-Jun-2023 00:17 109682 dmsp_18_ephemeris_20110501.txt 22-Jun-2023 00:17 109606