../ dmsp_15_ephemeris_20131220.txt 22-Jun-2023 00:23 109481 dmsp_16_ephemeris_20131220.txt 22-Jun-2023 00:23 109350 dmsp_17_ephemeris_20131220.txt 22-Jun-2023 00:23 109331 dmsp_18_ephemeris_20131220.txt 22-Jun-2023 00:23 109263