../ dmsp_15_ephemeris_20211130.txt 22-Jun-2023 00:49 109307 dmsp_16_ephemeris_20211130.txt 22-Jun-2023 00:49 109328 dmsp_17_ephemeris_20211130.txt 22-Jun-2023 00:49 109380 dmsp_18_ephemeris_20211130.txt 22-Jun-2023 00:49 109346