../ dmsp_15_ephemeris_20170915.txt 22-Jun-2023 16:26 109655 dmsp_16_ephemeris_20170915.txt 22-Jun-2023 16:26 109631 dmsp_17_ephemeris_20170915.txt 22-Jun-2023 16:26 109598 dmsp_18_ephemeris_20170915.txt 22-Jun-2023 16:26 109711