../ dmsp_15_ephemeris_20200817.txt 22-Jun-2023 00:44 109647 dmsp_16_ephemeris_20200817.txt 22-Jun-2023 00:44 109677 dmsp_17_ephemeris_20200817.txt 22-Jun-2023 00:44 109658 dmsp_18_ephemeris_20200817.txt 22-Jun-2023 00:44 109530