../ dmsp_15_ephemeris_20151224.txt 22-Jun-2023 00:30 109437 dmsp_16_ephemeris_20151224.txt 22-Jun-2023 00:30 109278 dmsp_17_ephemeris_20151224.txt 22-Jun-2023 00:30 109373 dmsp_18_ephemeris_20151224.txt 22-Jun-2023 00:30 109249 dmsp_19_ephemeris_20151224.txt 22-Jun-2023 00:30 109362