## 例

`

     mixed date_sunset ( int $timestamp [, int $format = SUNFUNCS_RET_STRING [, float $latitude = ini_get("date.default_latitude") [, float $longitude = ini_get("date.default_longitude") [, float $zenith = ini_get("date.sunset_zenith") [, float $gmt_offset = 0 ]]]]] )

`

## 説明

date_sunset() returns the sunset time for a given day (specified as a timestamp) and location.

## 戻り値

Returns the sunset time in a specified format on success or FALSE on failure.