Convert local birth time to UTC.
Birth data with local time and timezone
UTC datetime
Handles day rollover when timezone conversion crosses midnight.
// 18:00 EST (-5) = 23:00 UTCconst utc = localToUTC({ year: 2000, month: 1, day: 1, hour: 18, minute: 0, second: 0, timezone: -5, latitude: 0, longitude: 0});// { year: 2000, month: 1, day: 1, hour: 23, minute: 0, second: 0 } Copy
// 18:00 EST (-5) = 23:00 UTCconst utc = localToUTC({ year: 2000, month: 1, day: 1, hour: 18, minute: 0, second: 0, timezone: -5, latitude: 0, longitude: 0});// { year: 2000, month: 1, day: 1, hour: 23, minute: 0, second: 0 }
Convert local birth time to UTC.