../ dmsp_15_ephemeris_20201124.txt 22-Jun-2023 00:45 109482 dmsp_16_ephemeris_20201124.txt 22-Jun-2023 00:45 109336 dmsp_17_ephemeris_20201124.txt 22-Jun-2023 00:45 109351 dmsp_18_ephemeris_20201124.txt 22-Jun-2023 00:45 109441