../ dmsp_15_ephemeris_20180624.txt 22-Jun-2023 00:37 109446 dmsp_16_ephemeris_20180624.txt 22-Jun-2023 00:37 109565 dmsp_17_ephemeris_20180624.txt 22-Jun-2023 00:37 109592 dmsp_18_ephemeris_20180624.txt 22-Jun-2023 00:37 109621