../ dmsp_15_ephemeris_20101221.txt 22-Jun-2023 16:07 109358 dmsp_16_ephemeris_20101221.txt 22-Jun-2023 16:07 109250 dmsp_17_ephemeris_20101221.txt 22-Jun-2023 16:07 109327 dmsp_18_ephemeris_20101221.txt 22-Jun-2023 16:07 109415