[lokimedes]

Why are most recent US foreign actions taken during the weekend, when the markets are closed?

[avaer]

To soften the economic blow in a fast paced media cycle.

[chatmasta]

Saturday is the first day of the working week in Iran which is why Israel struck at daytime when senior leadership was in a working meeting.

[sillyfluke]

>Iran which is why Israel struck at daytime because

Israel struck because they had info that some people were going to be at a specific place at a specific time. One would suppose they could have chosen Saturday for another reason only if they had the luxury of continuous intelligence providing multiple options with equal chances of success. In that case, choosing that day to avoid unnecessary economic volatilty for you and your allies makes sense.