Function startOfHour

startOfHour<DateType extends Date, ResultDate extends Date = DateType>(
date: DateArg<DateType>,
options?: StartOfHourOptions<ResultDate>,
): ResultDate
Type Parameters
- DateType extends Date
  The Date type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like UTCDate.
- ResultDate extends Date = DateType
  The result Date type, it is the type returned from the context function if it is passed, or inferred from the arguments.
Parameters
- date: DateArg<DateType>
  The original date
- Optionaloptions: StartOfHourOptions<ResultDate>
  An object with options
Returns ResultDate
The start of an hour
Name
startOfHour

Description
Return the start of an hour for the given date. The result will be in the local timezone.
Example
```
// The start of an hour for 2 September 2014 11:55:00:
const result = startOfHour(new Date(2014, 8, 2, 11, 55))
//=> Tue Sep 02 2014 11:00:00
```
- Defined in node_modules/date-fns/startOfHour.d.ts:29