Pressure has been constant on our magnetosphere since 16:05 UT time on 3/9/12 through 03:05 UT time on 3/10/12.
The X-Flare could have been hitting us all day…..
Q: How fast do the CMEs travel ?
A: A coronal mass ejection can make the 93-million-mile journey to Earth in just three to four days. This implies an average speed of about one million miles per hour.
….the last X-Flare was on March 7th.