There are two ways to keep track of the time when a song was played:
Simple time control
Puts an approximate time-stamp in each song. The control is semi-automated: it updates to the current time if the playlist is being entered live on-air. Time is kept only to the nearest minute.
Start-duration-end time control
Provides for timing capture in conformance with CPB rules for webcast reporting. The DJ manually enters the song start time and either its duration or end time (the form calculates the rest). Hours, minutes and seconds are required and there is no automated time-stamping.
Start-duration-end time is pretty much only used by CPB stations with webcasts and usually only during their quarterly webcast reporting periods. It is quite cumbersome for DJs.
Time-stamps are very valuable information, especially for listeners. The principal use of Spinitron by the listening public is to look up what was played during a program – often after the fact when time-stamps are very helpful to identify the songs of interest.
Disabling all time-keeping is possible but not recommended. It is disadvantageous for listeners and makes checking and sorting playlists harder.