R - Numeric to Date gives wrong value

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R - Numeric to Date gives wrong value



I have a data frame DP with a column variable in numeric format which is a numeric representation of Date.


DP


variable



Example: 43282 corresponds to 7/1/2018 (try in excel).



But in R when I call as.Date() to convert it to date, I get the wrong date


as.Date()


DP$Time <- as.Date(DP$variable)

variable Time
1 43282 2088-07-02



What am I doing wrong here?





Thanks a lot!!. Guess origin was defaulted to '1970-01-01' I changed it to origin = '1900-01-01' and it worked
– Rifadh Zizou
Aug 10 at 21:59





1 Answer
1



If it is based on excel, then change the origin from default 1970-01-01 to 1899-12-30


origin


1970-01-01


1899-12-30


as.Date(43282, origin = '1899-12-30')
#[1] "2018-07-01"






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