Given March $$25$$th of a certain year is Monday, what day of the week would May $$1$$st fall on this year? 
Overseas Competition->Knowledge Point->Word Problem Modules->Periodic Problems->Periodic Problems of Time
The cycle includes seven days, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are in total $$7+30+1=38$$ days from March $$25$$ to May $$1$$. Since $$38\div7=5 \text{ R }3$$，$$$$May$$$$ $$1$$ is the $$3^{\rm rd}$$ day in the cycle, it is a Wednesday. 