as.Date: conversion pb from POSIXct (PR#9386)
as.Date is converting your object with respect to GMT time zone and in that time zone your POSIXct date is the day before. See ?as.Date and also suggest you read R News 4/1 help desk article.
On 11/27/06, xiao.gang.fan1 at free.fr <xiao.gang.fan1 at free.fr> wrote:
Full_Name: Xiao Gang FAN Version: 2.4.0 OS: Windows Submission from: (NULL) (159.50.101.9)
library(chron)
as.Date(as.POSIXct(strptime("1994-01-24","%Y-%m-%d")))
[1] "1994-01-23"
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