../ dmsp_15_ephemeris_20170727.txt 22-Jun-2023 00:34 109522 dmsp_16_ephemeris_20170727.txt 22-Jun-2023 00:34 109600 dmsp_17_ephemeris_20170727.txt 22-Jun-2023 00:34 109636 dmsp_18_ephemeris_20170727.txt 22-Jun-2023 00:34 109528