In lubridate you just have to specify the order in which the date/time elements (year, month, day, hour, minute, second) are and the function figures out the rest (spacing separators, wether the year has 2 or 4 digits, character or numeric representation of month, etc.). But we will use the lubridate package which makes things much easier. You need to specify precisely the format the date/time is written in. as.POSIXct(" 15-23-10") Error: character string is not in a standard unambiguous format
If it is in a different format, as.POSIXct fails and you need to parse it manually. So the easiest was to get your date/time data into R is to format it this way from the start.
It just adds the current time zone of your computer by default.
UTC SPSS CODE ISO
If the date/time is in ISO 8601 format already (i.e. YYYY-MM-DD HH:MM:SS), R can parse it directly.
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