Big
on Aug 28, 2004
from USGS

Aug 28, Harvard, Massachusetts, USA	Aug 28, Beijing, China
Aug 28, Tornquist, Argentina	Aug 28, Lusaka, Zambia
Aug 281, Santo Domingo, Venezuela	Aug 28, South Pole, Antartica

Note: Whiplash Sweeps bump first the Dark Twin toward Earth, then the Earth toward Planet X, and within a couple days Planet X hops over the Sweeping Arm thus pushing Earth again, and finally Earth collides again with her Dark Twin behind her.