../ dmsp_15_ephemeris_20190320.txt 22-Jun-2023 00:40 108182 dmsp_16_ephemeris_20190320.txt 22-Jun-2023 00:40 108085 dmsp_17_ephemeris_20190320.txt 22-Jun-2023 00:40 108202 dmsp_18_ephemeris_20190320.txt 22-Jun-2023 00:40 108294