ToISOdate(clock.entries)
str <- c("CLOCK: [2014-11-26 Wed 09:36]--[2014-11-26 Wed 10:04] => 0:28", "CLOCK: [2014-12-04 Thu 15:24]--[2014-12-04 Thu 16:25] => 1:01") ToISOdate(str)
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