../ dmsp_15_ephemeris_20151211.txt 22-Jun-2023 00:29 109419 dmsp_16_ephemeris_20151211.txt 22-Jun-2023 00:29 109560 dmsp_17_ephemeris_20151211.txt 22-Jun-2023 00:29 109247 dmsp_18_ephemeris_20151211.txt 22-Jun-2023 00:29 109268 dmsp_19_ephemeris_20151211.txt 22-Jun-2023 00:29 109252