../ dmsp_15_ephemeris_20180530.txt 22-Jun-2023 00:37 109433 dmsp_16_ephemeris_20180530.txt 22-Jun-2023 00:37 109527 dmsp_17_ephemeris_20180530.txt 22-Jun-2023 00:37 109506 dmsp_18_ephemeris_20180530.txt 22-Jun-2023 00:37 109600