../ dmsp_15_ephemeris_20200506.txt 22-Jun-2023 00:43 109633 dmsp_16_ephemeris_20200506.txt 22-Jun-2023 00:43 109627 dmsp_17_ephemeris_20200506.txt 22-Jun-2023 00:43 109648 dmsp_18_ephemeris_20200506.txt 22-Jun-2023 00:43 109553