../ dmsp_15_ephemeris_20190726.txt 22-Jun-2023 16:31 109576 dmsp_16_ephemeris_20190726.txt 22-Jun-2023 16:31 109589 dmsp_17_ephemeris_20190726.txt 22-Jun-2023 16:31 109636 dmsp_18_ephemeris_20190726.txt 22-Jun-2023 16:31 109594