Convert POSIX date and time to UNIX time in R [duplicate]

Question

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convert date to unix time in R (3 answers)

Closed 5 years ago.

I am looking for a way to convert a simple POSIX time stamp like this

> time
[1] "2014-02-19 17:40:41"

into an UNIX time stamp. All solutions I found only worked the other way round. Can anybody provide some help? Thanks in advance!

Answer 1

Have you tried this?

as.numeric(as.POSIXct("2014-02-20"))

From ?POSIXct

There are two basic classes of date/times. Class "POSIXct" represents the (signed)
number of seconds since the beginning of 1970 (in the UTC timezone) as a numeric vector.