Mention numeric offsets from epoch
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@ -160,6 +160,13 @@ You may want to switch between a date-time and a date. That's the job of `as_dat
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as_date(now())
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as_date(now())
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```
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```
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Sometimes you'll get date/times as numeric offsets from the "Unix Epoch", 1970-01-01. If the offset is in seconds, use `as_datetime()`; if it's in days, use `as_date()`.
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```{r}
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# as_datetime(60 * 60 * 10)
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as_date(365)
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```
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### Exercises
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### Exercises
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1. What happens if you parse a string that contains invalid dates?
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1. What happens if you parse a string that contains invalid dates?
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