7英寸的Mk XII艦炮抬升至仰角40度,與相同目標交戰約37秒。(A 240 mph target, at 12 thousand feet altitude could expect to be under fire for about 58 seconds, from the time it enters
[2009-01-03]. (原始内容存档于2009-02-04). May 01, 2009. May 1, 2009: The Day in 100 Seconds. YouTube. 2009-05-01 [2009-05-08]. (原始内容存档于2015-12-18). 卡根上任美国大法官. [2010-08-08]
Aoki, the ultimate source of these figures, uses the term "seconds of UT1" instead of "seconds of mean solar time". Aoki, et al., "The new definition of