../ dmsp_15_ephemeris_20200215.txt 22-Jun-2023 00:43 108096 dmsp_16_ephemeris_20200215.txt 22-Jun-2023 00:43 108135 dmsp_17_ephemeris_20200215.txt 22-Jun-2023 00:43 108044 dmsp_18_ephemeris_20200215.txt 22-Jun-2023 00:43 108129