../ dmsp_15_ephemeris_20190815.txt 22-Jun-2023 00:41 109633 dmsp_16_ephemeris_20190815.txt 22-Jun-2023 00:41 109648 dmsp_17_ephemeris_20190815.txt 22-Jun-2023 00:41 109724 dmsp_18_ephemeris_20190815.txt 22-Jun-2023 00:41 109431