../ dmsp_15_ephemeris_20180115.txt 22-Jun-2023 00:36 108083 dmsp_16_ephemeris_20180115.txt 22-Jun-2023 00:36 107954 dmsp_17_ephemeris_20180115.txt 22-Jun-2023 00:36 108020 dmsp_18_ephemeris_20180115.txt 22-Jun-2023 00:36 107934