WordNet (r) 3.0 (2006):

roll around
    v 1: happen regularly; "Christmas rolled around again" [syn:
         come around, roll around]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "roll around":
   alternate, be here again, circle, come again, come and go,
   come around, come round, come round again, come up again, cycle,
   intermit, oscillate, pulsate, pulse, reappear, recur, reoccur,
   repeat, return, revolve, rotate, turn, undulate, wheel,
   wheel around