../ dmsp_15_ephemeris_20210225.txt 22-Jun-2023 00:46 108176 dmsp_16_ephemeris_20210225.txt 22-Jun-2023 00:46 108143 dmsp_17_ephemeris_20210225.txt 22-Jun-2023 00:46 108045 dmsp_18_ephemeris_20210225.txt 22-Jun-2023 00:46 108042