../ dmsp_15_ephemeris_20130501.txt 22-Jun-2023 16:34 109497 dmsp_16_ephemeris_20130501.txt 22-Jun-2023 16:34 109710 dmsp_17_ephemeris_20130501.txt 22-Jun-2023 16:34 109751 dmsp_18_ephemeris_20130501.txt 22-Jun-2023 16:34 109722