Function createUTCDateFromLocalCalendarDate

src/utils/dateUtils.ts:1416–1424

(localDate: Date)

 * @returns A UTC date representing midnight UTC on that calendar date
 */
export function createUTCDateFromLocalCalendarDate(localDate: Date): Date {
	// Extract the local date components
	const year = localDate.getFullYear();
	const month = localDate.getMonth();
	const day = localDate.getDate();

	// Create a UTC date for that calendar date
	return new Date(Date.UTC(year, month, day, 0, 0, 0, 0));
}

/**
 * Checks if a UTC-anchored date object represents the user's local "today".