<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (July 2011) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Saint Valentine's Day Massacre </Th> </Tr> <Tr> <Td_colspan="2"> 2122 North Clark Street </Td> </Tr> <Tr> <Th> Location </Th> <Td> Warehouse at Dickens and Clark in Lincoln Park, Chicago, Illinois, U.S. </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 41 ° 55 ′ 15" N 87 ° 38 ′ 16" W ﻿ / ﻿ 41.9208 ° N 87.6379 ° W ﻿ / 41.9208; - 87.6379 Coordinates: 41 ° 55 ′ 15" N 87 ° 38 ′ 16" W ﻿ / ﻿ 41.9208 ° N 87.6379 ° W ﻿ / 41.9208; - 87.6379 </Td> </Tr> <Tr> <Th> Date </Th> <Td> February, 14, 1929 10: 30 am (CST) </Td> </Tr> <Tr> <Th> Attack type </Th> <Td> Massacre </Td> </Tr> <Tr> <Th> Weapons </Th> <Td> Two Thompson submachine guns Two shotguns </Td> </Tr> <Tr> <Th> Deaths </Th> <Td> 7 (Five members of the North Side Gang, and two other affiliates) </Td> </Tr> <Tr> <Th> Perpetrators </Th> <Td> Chicago Outfit Egan's Rats The Purple Gang </Td> </Tr> <Tr> <Th> Participant </Th> <Td> 4 (all unidentified) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Saint Valentine's Day Massacre </Th> </Tr>

When did the st valentine day massacre happen