# Time Library The `(scheme time)` library provides access to time-related values. For more information see the [R7RS Scheme Specification](../../r7rs.pdf). - [`current-jiffy`](#current-jiffy) - [`current-second`](#current-second) - [`jiffies-per-second`](#jiffies-per-second) # current-jiffy (current-jiffy) Get the number of jiffies since the program started. This function can return the same value if the program runs longer than approximately 72 minutes on a 32-bit platform. # current-second (current-second) Get the current number of seconds since the UNIX epoch. # jiffies-per-second (jiffies-per-second) The number of jiffies per second.