../ dmsp_15_ephemeris_20121105.txt 22-Jun-2023 00:21 109499 dmsp_16_ephemeris_20121105.txt 22-Jun-2023 00:21 109424 dmsp_17_ephemeris_20121105.txt 22-Jun-2023 00:21 109496 dmsp_18_ephemeris_20121105.txt 22-Jun-2023 00:21 109373