Definition of revolutions per minute unit: = Hz/60. The number of cycles that occurred in one minute. Cycle may be periodically repeating event. Symbol is rpm (revolutions per minute), it is the sixtieth part of Hertz.
Definition of degrees per minute unit: = 1/(360 × 60) Hz. Degrees per minute is a form of angular velocity unit. Value will show you how many degrees the body will turn in a minute. The frequency can also be determined from number with equation: 1 [Hz] = 1/21600 [deg / min]