../ dmsp_15_ephemeris_20131209.txt 22-Jun-2023 00:23 109449 dmsp_16_ephemeris_20131209.txt 22-Jun-2023 00:23 109300 dmsp_17_ephemeris_20131209.txt 22-Jun-2023 00:23 109274 dmsp_18_ephemeris_20131209.txt 22-Jun-2023 00:23 109398