../ dmsp_15_ephemeris_20130404.txt 22-Jun-2023 00:22 108216 dmsp_16_ephemeris_20130404.txt 22-Jun-2023 00:22 108200 dmsp_17_ephemeris_20130404.txt 22-Jun-2023 00:22 108259 dmsp_18_ephemeris_20130404.txt 22-Jun-2023 00:22 108388