Uso de through and until

Veja abaixo alguns exemplos de como usar through and until quando se referir a tempo ou seja, datas, horários.
He worked here from March 2, 2008 through April 2, 2008. (His last day was April 2, 2008.)
He worked here from March 2, 2008 until April 2 2008.(His last day was April 1, 2008,)
Lunchtime begins at 12:00 noon and ends at 1:00 PM.
She wants you to be in the office through lunchtime.(At 1:00 PM you may leave the office.)
She wants you to be in the office until lunchtime.(At 12:00 noon you may leave the office.)
The supermarket is open Sunday through Saturday.
See you!