../ dmsp_15_ephemeris_20121012.txt 22-Jun-2023 00:20 109547 dmsp_16_ephemeris_20121012.txt 22-Jun-2023 00:20 109459 dmsp_17_ephemeris_20121012.txt 22-Jun-2023 00:20 109489 dmsp_18_ephemeris_20121012.txt 22-Jun-2023 00:20 109605