../ dmsp_15_ephemeris_20210111.txt 22-Jun-2023 17:01 108122 dmsp_16_ephemeris_20210111.txt 22-Jun-2023 17:01 107881 dmsp_17_ephemeris_20210111.txt 22-Jun-2023 17:01 107646 dmsp_18_ephemeris_20210111.txt 22-Jun-2023 17:01 107906