../ dmsp_15_ephemeris_20170609.txt 22-Jun-2023 00:34 109552 dmsp_16_ephemeris_20170609.txt 22-Jun-2023 00:34 109517 dmsp_17_ephemeris_20170609.txt 22-Jun-2023 00:34 109602 dmsp_18_ephemeris_20170609.txt 22-Jun-2023 00:34 109564