../ dmsp_15_ephemeris_20130923.txt 22-Jun-2023 00:23 109562 dmsp_16_ephemeris_20130923.txt 22-Jun-2023 00:23 109607 dmsp_17_ephemeris_20130923.txt 22-Jun-2023 00:23 109672 dmsp_18_ephemeris_20130923.txt 22-Jun-2023 00:23 109600