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When using format(as.Date(c("2020-10-04", "2020-10-05")), "%U") (the first date is sunday, the second date is monday) I get week 40 for both dates. What do I have to do in order to let the week start on Monday?

Ronak Shah
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D. Studer
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2 Answers2

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Use "%V" :

format(as.Date(c("2020-10-04", "2020-10-05")), "%V")
#[1] "40" "41"
Ronak Shah
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format(as.Date(c("2020-10-04", "2020-10-05")), "%W")

Check out ?strptime for the full documentation on it

Edo
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