../ dmsp_15_ephemeris_20210307.txt 22-Jun-2023 00:46 108154 dmsp_16_ephemeris_20210307.txt 22-Jun-2023 00:46 108083 dmsp_17_ephemeris_20210307.txt 22-Jun-2023 00:46 108169 dmsp_18_ephemeris_20210307.txt 22-Jun-2023 00:46 108098