../ dmsp_15_ephemeris_20210118.txt 22-Jun-2023 16:34 107951 dmsp_16_ephemeris_20210118.txt 22-Jun-2023 16:34 107999 dmsp_17_ephemeris_20210118.txt 22-Jun-2023 16:34 107962 dmsp_18_ephemeris_20210118.txt 22-Jun-2023 16:34 107931