../ dmsp_15_ephemeris_20170801.txt 22-Jun-2023 16:26 109541 dmsp_16_ephemeris_20170801.txt 22-Jun-2023 16:26 109587 dmsp_17_ephemeris_20170801.txt 22-Jun-2023 16:26 109659 dmsp_18_ephemeris_20170801.txt 22-Jun-2023 16:26 109623