../ dmsp_15_ephemeris_20180805.txt 22-Jun-2023 16:53 109554 dmsp_16_ephemeris_20180805.txt 22-Jun-2023 16:53 109635 dmsp_17_ephemeris_20180805.txt 22-Jun-2023 16:53 109671 dmsp_18_ephemeris_20180805.txt 22-Jun-2023 16:53 109627