../ dmsp_15_ephemeris_20111229.txt 22-Jun-2023 00:19 109380 dmsp_16_ephemeris_20111229.txt 22-Jun-2023 00:19 109295 dmsp_17_ephemeris_20111229.txt 22-Jun-2023 00:19 109441 dmsp_18_ephemeris_20111229.txt 22-Jun-2023 00:19 109301