<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 . (April 2017) (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 . (April 2017) (Learn how and when to remove this template message) </Td> </Tr> <Table> 1906 San Francisco earthquake <Tr> <Td_colspan="2"> Eureka Dunsmuir Chico Truckee Santa Rosa Salinas Bakersfield Fresno Paso Robles Santa Monica Indio </Td> </Tr> <Tr> <Th> Date </Th> <Td> April 18, 1906 (1906 - 04 - 18) </Td> </Tr> <Tr> <Th> Origin time </Th> <Td> 05: 12 local time </Td> </Tr> <Tr> <Th> Magnitude </Th> <Td> 7.8 M </Td> </Tr> <Tr> <Th> Depth </Th> <Td> 5 mi (8.0 km) </Td> </Tr> <Tr> <Th> Epicenter </Th> <Td> 37 ° 45 ′ N 122 ° 33 ′ W ﻿ / ﻿ 37.75 ° N 122.55 ° W ﻿ / 37.75; - 122.55 Coordinates: 37 ° 45 ′ N 122 ° 33 ′ W ﻿ / ﻿ 37.75 ° N 122.55 ° W ﻿ / 37.75; - 122.55 </Td> </Tr> <Tr> <Th> Type </Th> <Td> Strike - slip </Td> </Tr> <Tr> <Th> Areas affected </Th> <Td> North Coast San Francisco Bay Area Central Coast United States </Td> </Tr> <Tr> <Th> Max . intensity </Th> <Td> XI (Extreme) </Td> </Tr> <Tr> <Th> Tsunami </Th> <Td> Yes </Td> </Tr> <Tr> <Th> Casualties </Th> <Td> 700--3,000 + </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Eureka Dunsmuir Chico Truckee Santa Rosa Salinas Bakersfield Fresno Paso Robles Santa Monica Indio </Td> </Tr>

When did the earthquake happen in san francisco