../ dmsp_15_ephemeris_20200309.txt 22-Jun-2023 00:43 108076 dmsp_16_ephemeris_20200309.txt 22-Jun-2023 00:43 108147 dmsp_17_ephemeris_20200309.txt 22-Jun-2023 00:43 108250 dmsp_18_ephemeris_20200309.txt 22-Jun-2023 00:43 108191