../ dmsp_15_ephemeris_20170218.txt 22-Jun-2023 16:48 108118 dmsp_16_ephemeris_20170218.txt 22-Jun-2023 16:48 108200 dmsp_17_ephemeris_20170218.txt 22-Jun-2023 16:48 108064 dmsp_18_ephemeris_20170218.txt 22-Jun-2023 16:48 108231