../ dmsp_15_ephemeris_20200425.txt 22-Jun-2023 00:43 109485 dmsp_16_ephemeris_20200425.txt 22-Jun-2023 00:43 109528 dmsp_17_ephemeris_20200425.txt 22-Jun-2023 00:43 109619 dmsp_18_ephemeris_20200425.txt 22-Jun-2023 00:43 109523