An operating system performs these services for applications: In a multitasking operating system where multiple programs can be running at the same time, the operating system determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn.
St. Patrickâs Day. Every year on March 17, the Irish and the Irish-at-heart across the globe observe St. Patrickâs Day. What began as a religious feast day for the patron saint of Ireland has become an international festival celebrating Irish culture with parades, dancing, special foods and a whole lot of green. 1  Facebook. 2  Twitter. 3  Google.
Biggest St Patricks Day Parades. Written on January 31, 2017. St Patricks Day Parades. After Mass, the St Patricks Day Parades are the next most important element of this world famous festival. Here on the sites we list some 300 St Patricks Day Parades across the world celebrating St Patrickâs Day.