../ dmsp_15_ephemeris_20110427.txt 22-Jun-2023 00:17 109616 dmsp_16_ephemeris_20110427.txt 22-Jun-2023 00:17 109620 dmsp_17_ephemeris_20110427.txt 22-Jun-2023 00:17 109694 dmsp_18_ephemeris_20110427.txt 22-Jun-2023 00:17 109716