../ dmsp_15_ephemeris_20200830.txt 22-Jun-2023 00:44 109624 dmsp_16_ephemeris_20200830.txt 22-Jun-2023 00:44 109551 dmsp_17_ephemeris_20200830.txt 22-Jun-2023 00:44 109668 dmsp_18_ephemeris_20200830.txt 22-Jun-2023 00:44 109715