../ dmsp_15_ephemeris_20210301.txt 22-Jun-2023 16:29 108031 dmsp_16_ephemeris_20210301.txt 22-Jun-2023 16:29 108202 dmsp_17_ephemeris_20210301.txt 22-Jun-2023 16:29 107968 dmsp_18_ephemeris_20210301.txt 22-Jun-2023 16:29 108176