../ dmsp_15_ephemeris_20181226.txt 22-Jun-2023 00:39 109396 dmsp_16_ephemeris_20181226.txt 22-Jun-2023 00:39 109371 dmsp_17_ephemeris_20181226.txt 22-Jun-2023 00:39 109264 dmsp_18_ephemeris_20181226.txt 22-Jun-2023 00:39 109206