../ dmsp_15_ephemeris_20190619.txt 22-Jun-2023 00:41 109525 dmsp_16_ephemeris_20190619.txt 22-Jun-2023 00:41 109505 dmsp_17_ephemeris_20190619.txt 22-Jun-2023 00:41 109592 dmsp_18_ephemeris_20190619.txt 22-Jun-2023 00:41 109528