../ dmsp_15_ephemeris_20110704.txt 22-Jun-2023 16:30 109536 dmsp_16_ephemeris_20110704.txt 22-Jun-2023 16:30 109536 dmsp_17_ephemeris_20110704.txt 22-Jun-2023 16:30 109693 dmsp_18_ephemeris_20110704.txt 22-Jun-2023 16:30 109574