../ dmsp_15_ephemeris_20210619.txt 22-Jun-2023 17:03 109585 dmsp_16_ephemeris_20210619.txt 22-Jun-2023 17:03 109568 dmsp_17_ephemeris_20210619.txt 22-Jun-2023 17:03 109546 dmsp_18_ephemeris_20210619.txt 22-Jun-2023 17:03 109509