../ dmsp_15_ephemeris_20201109.txt 22-Jun-2023 00:45 109523 dmsp_16_ephemeris_20201109.txt 22-Jun-2023 00:45 109419 dmsp_17_ephemeris_20201109.txt 22-Jun-2023 00:45 109449 dmsp_18_ephemeris_20201109.txt 22-Jun-2023 00:45 109447