在R手册中搜索Date-Time Classes
时,您可以
sec
0–61: seconds
为什么秒数不在0-59
之间?
答案 0 :(得分:2)
我记得这是闰秒调整。
快速检查NEWS.*
我找到了例如
o .leap.seconds and the internal adjustment code now know about
the 23rd leap second on 2005-12-31: the internal code uses a
run-time test to see if the OS does.