Big/Double
on Sep 6, 2004
from USGS

Sep 6, Cathedral Cave, Missouri, USA	Sep 6, Baijiatuan, Beijing, China
Sep 6, Kongsberg, Norway	Sep 6, Lusaka, Zambia
Sep 6, Tornquist, Argentina	Sep 6, Charters Towers, Australia

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.