Converting MATLAB and R date and time values

February 20, 2011
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(This article was first published on lukemiller.org » R-project, and kindly contributed to R-bloggers)

For some unknown reason, MATLAB codes its date/time values as the number of elapsed days starting from January 1 in the year 0000. R uses the equally arbitrary, but much more widespread POSIX/Unix epoch as a reference for time keeping, so that R’s POSIX time values are stored internally as the elapsed seconds since 00:00 [...]

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