../ dmsp_15_ephemeris_20190226.txt 22-Jun-2023 00:39 108098 dmsp_16_ephemeris_20190226.txt 22-Jun-2023 00:39 108135 dmsp_17_ephemeris_20190226.txt 22-Jun-2023 00:39 108081 dmsp_18_ephemeris_20190226.txt 22-Jun-2023 00:39 108068