../ dmsp_15_ephemeris_20150908.txt 22-Jun-2023 16:43 109633 dmsp_16_ephemeris_20150908.txt 22-Jun-2023 16:43 109597 dmsp_17_ephemeris_20150908.txt 22-Jun-2023 16:43 109654 dmsp_18_ephemeris_20150908.txt 22-Jun-2023 16:43 109739 dmsp_19_ephemeris_20150908.txt 22-Jun-2023 16:43 109761