../ dmsp_15_ephemeris_20200815.txt 22-Jun-2023 00:44 109567 dmsp_16_ephemeris_20200815.txt 22-Jun-2023 00:44 109623 dmsp_17_ephemeris_20200815.txt 22-Jun-2023 00:44 109655 dmsp_18_ephemeris_20200815.txt 22-Jun-2023 00:44 109507