../ dmsp_15_ephemeris_20151220.txt 22-Jun-2023 16:17 109407 dmsp_16_ephemeris_20151220.txt 22-Jun-2023 16:17 109370 dmsp_17_ephemeris_20151220.txt 22-Jun-2023 16:17 109302 dmsp_18_ephemeris_20151220.txt 22-Jun-2023 16:17 109216 dmsp_19_ephemeris_20151220.txt 22-Jun-2023 16:17 109275