../ dmsp_15_ephemeris_20210113.txt 22-Jun-2023 16:28 108001 dmsp_16_ephemeris_20210113.txt 22-Jun-2023 16:28 108041 dmsp_17_ephemeris_20210113.txt 22-Jun-2023 16:28 107850 dmsp_18_ephemeris_20210113.txt 22-Jun-2023 16:28 107968