day time saving 2011

Dear Lak Natrukal,

Yesterday I was late to work. I should start working 9:00AM but instead I get in to work late 10:00AM which was an hour late. When you told me that I was late I argued with you. Because I thought I wasn’t late. This all happened because day light saving time.
I am originally from Ethiopia. It has been only two months since I came to U.S. In my country there is no daylight saving time change since Ethiopia is located at the equator where there is sunshine all the year around and the day and night are almost both 12 hours long therefore there is no need to adjust the time all the year round. Since US is located in Northern hemisphere, the time should be adjusted twice a year.
I should have explained this fact to you than ignoring you. But now after my friend told me that I have to adjust my clock. I knew. I was an hour late. I would like to apologize for misunderstanding and for being late. I appreciate your patient. Now I knew that day light saving start in the second Sunday of March and end in the first Sunday of November of each year.

Warmest regards,
Mulatu Lakew