../ dmsp_15_ephemeris_20200915.txt 22-Jun-2023 16:34 109701 dmsp_16_ephemeris_20200915.txt 22-Jun-2023 16:34 109658 dmsp_17_ephemeris_20200915.txt 22-Jun-2023 16:34 109696 dmsp_18_ephemeris_20200915.txt 22-Jun-2023 16:34 109633