../ dmsp_15_ephemeris_20220915.txt 22-Jun-2023 00:53 109579 dmsp_16_ephemeris_20220915.txt 22-Jun-2023 00:53 109627 dmsp_17_ephemeris_20220915.txt 22-Jun-2023 00:53 109621 dmsp_18_ephemeris_20220915.txt 22-Jun-2023 00:53 109710