../ dmsp_15_ephemeris_20111210.txt 22-Jun-2023 00:19 109346 dmsp_16_ephemeris_20111210.txt 22-Jun-2023 00:19 109287 dmsp_17_ephemeris_20111210.txt 22-Jun-2023 00:19 109416 dmsp_18_ephemeris_20111210.txt 22-Jun-2023 00:19 109439