../ dmsp_15_ephemeris_20200614.txt 22-Jun-2023 16:33 109594 dmsp_16_ephemeris_20200614.txt 22-Jun-2023 16:33 109458 dmsp_17_ephemeris_20200614.txt 22-Jun-2023 16:33 109616 dmsp_18_ephemeris_20200614.txt 22-Jun-2023 16:33 109625