../ dmsp_15_ephemeris_20170116.txt 22-Jun-2023 00:33 107991 dmsp_16_ephemeris_20170116.txt 22-Jun-2023 00:33 107922 dmsp_17_ephemeris_20170116.txt 22-Jun-2023 00:33 107976 dmsp_18_ephemeris_20170116.txt 22-Jun-2023 00:33 107879