../ dmsp_15_ephemeris_20111214.txt 22-Jun-2023 00:19 109355 dmsp_16_ephemeris_20111214.txt 22-Jun-2023 00:19 109370 dmsp_17_ephemeris_20111214.txt 22-Jun-2023 00:19 109322 dmsp_18_ephemeris_20111214.txt 22-Jun-2023 00:19 109353