../ dmsp_15_ephemeris_20200824.txt 22-Jun-2023 16:34 109598 dmsp_16_ephemeris_20200824.txt 22-Jun-2023 16:34 109603 dmsp_17_ephemeris_20200824.txt 22-Jun-2023 16:34 109658 dmsp_18_ephemeris_20200824.txt 22-Jun-2023 16:34 109535