../ dmsp_15_ephemeris_20110226.txt 22-Jun-2023 00:17 108108 dmsp_16_ephemeris_20110226.txt 22-Jun-2023 00:17 108037 dmsp_17_ephemeris_20110226.txt 22-Jun-2023 00:17 108099 dmsp_18_ephemeris_20110226.txt 22-Jun-2023 00:17 108100