../ dmsp_15_ephemeris_20230409.txt 22-Jun-2023 00:55 108201 dmsp_16_ephemeris_20230409.txt 22-Jun-2023 00:55 108233 dmsp_17_ephemeris_20230409.txt 22-Jun-2023 00:55 108215 dmsp_18_ephemeris_20230409.txt 22-Jun-2023 00:55 108108