../ dmsp_15_ephemeris_20110422.txt 22-Jun-2023 00:17 109703 dmsp_16_ephemeris_20110422.txt 22-Jun-2023 00:17 109683 dmsp_17_ephemeris_20110422.txt 22-Jun-2023 00:17 109769 dmsp_18_ephemeris_20110422.txt 22-Jun-2023 00:17 109831