startOfQuarterForDateTime
Signature
Section titled “Signature”startOfQuarterForDateTime(value: string): stringReturn the start of the quarter for a given ISO datetime.
- Returns the first day of the quarter with time set to 00:00:00.
- Resets every time field, including milliseconds, microseconds and nanoseconds.
- Q1 returns “01-01T00:00:00”, Q2 returns “04-01T00:00:00”, etc.
- Validates input using isValidDateTime.
Parameters
Section titled “Parameters”| Parameter | Type | Description |
|---|---|---|
value | string | ISO PlainDateTime string |
Returns
Section titled “Returns”ISO PlainDateTime string for the start of the quarter, or "" on invalid input
Examples
Section titled “Examples”import { startOfQuarterForDateTime } from "@northguild/gmt/plain/calculate";
startOfQuarterForDateTime("2024-03-15T12:00:00") // "2024-01-01T00:00:00"