Get Current Date and Time
Sys.Date returns the system's idea of the
current date with and without time.
Sys.time returns an absolute date-time value which can be
converted to various time zones and may return different days.
Sys.Date returns the current day in the current time zone.
Sys.timereturns an object of class
"POSIXct"(see DateTimeClasses). On almost all systems it will have sub-second accuracy, possibly microseconds or better. On Windows it increments in clock ticks (usually 1/60 of a second) reported to millisecond accuracy.
Sys.Datereturns an object of class
Sys.time may return fractional seconds, but they are ignored by
the default conversions (e.g., printing) for class
See the examples and
format.POSIXct for ways to reveal them.
date for the system time in a fixed-format character