90,373
5,422,380
3765
500
125 months
Such things are not recorded to that degree of accuracy. approximately 31,088,085,200
345.3428 1 mega sec=1,000,000 seconds
The Civil War lasted for four (4) years. So to answer your question, it lasted more than 35,000 hours.
The Battle of Hastings lasted from 9am until 3pm (6 hours).
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Takes 300 hours for the average light bulb to burn out
Many of Edison's first bulbs lasted less than 40 hours.
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