../ dmsp_15_ephemeris_20220904.txt 22-Jun-2023 17:08 109750 dmsp_16_ephemeris_20220904.txt 22-Jun-2023 17:08 109621 dmsp_17_ephemeris_20220904.txt 22-Jun-2023 17:08 109559 dmsp_18_ephemeris_20220904.txt 22-Jun-2023 17:08 109602