How many times does lightning flash on Earth in a single day?

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The answer

3.8 million flashes

About 3.8 million times. Roughly 44 flashes every second.

How to get there

1. 44 flashes per second
2. × 86,400 seconds
3. = about 3.8 million

Source: Wikipedia: Distribution of lightning, 44 ± 5 per second (NOAA)

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