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Editorial Team
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Asked: 2026-05-13T15:03:47+00:00

How do I use strptime or any other functions to parse time stamps with

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How do I use strptime or any other functions to parse time stamps with milliseconds in R?

time <- "2010-01-15 13:55:23.975"
print(time)
# [1] "2010-01-15 13:55:23.975"
strptime(time, format="%Y-%m-%d %H:%M:%S.%f")
# [1] NA
strptime(time, format="%Y-%m-%d %H:%M:%S")
# [1] "2010-01-15 13:55:23"`
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1 Answer

  1. Editorial Team

    Courtesy of the ?strptime help file (with the example changed to your value):

    > z <- strptime("2010-01-15 13:55:23.975", "%Y-%m-%d %H:%M:%OS")
> z # prints without fractional seconds
[1] "2010-01-15 13:55:23 UTC"

> op <- options(digits.secs=3)
> z
[1] "2010-01-15 13:55:23.975 UTC"

> options(op) #reset options
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