Microsoft Windows Malicious Software Removal Tool is a freely distributed virus removal tool developed by Microsoft for the Microsoft Windows operating system. First released on January 13, 2005, it is an on-demand anti-virus tool ("on-demand" means it lacks real-time protection) that scans the computer for specific widespread malware and tries to eliminate the infection. It is automatically distributed to Microsoft Windows computers via the Windows Update service but can also be separately downloaded. The program is usually updated on the second Tuesday of every month (commonly called "Patch Tuesday...

The International Date Line (IDL) is an imaginary line of navigation on the surface of the Earth that runs from the North Pole to the South Pole and demarcates the change of one calendar day to the next. It passes through the middle of the Pacific Ocean, roughly following the 180° line of longitude but deviating to pass around some territories and island groups. == Geography == === Description === This description is based on the most common understanding of the de facto International Date Line. See § De facto and de jure date lines below, and map at right. The IDL is roughly based on t...