../ dmsp_15_ephemeris_20111215.txt 22-Jun-2023 00:19 109352 dmsp_16_ephemeris_20111215.txt 22-Jun-2023 00:19 109229 dmsp_17_ephemeris_20111215.txt 22-Jun-2023 00:19 109396 dmsp_18_ephemeris_20111215.txt 22-Jun-2023 00:19 109287