../ dmsp_15_ephemeris_20151228.txt 22-Jun-2023 16:17 109409 dmsp_16_ephemeris_20151228.txt 22-Jun-2023 16:17 109300 dmsp_17_ephemeris_20151228.txt 22-Jun-2023 16:17 109207 dmsp_18_ephemeris_20151228.txt 22-Jun-2023 16:17 109222 dmsp_19_ephemeris_20151228.txt 22-Jun-2023 16:17 109376