Below is the functionality needed for the ZonedDateTime component.

• 6.3.3 get Temporal.ZonedDateTime.prototype.calendarId
• 6.3.4 get Temporal.ZonedDateTime.prototype.timeZoneId
• 6.3.5 get Temporal.ZonedDateTime.prototype.year
• 6.3.6 get Temporal.ZonedDateTime.prototype.month
• 6.3.7 get Temporal.ZonedDateTime.prototype.monthCode
• 6.3.8 get Temporal.ZonedDateTime.prototype.day
• 6.3.9 get Temporal.ZonedDateTime.prototype.hour
• 6.3.10 get Temporal.ZonedDateTime.prototype.minute
• 6.3.11 get Temporal.ZonedDateTime.prototype.second
• 6.3.12 get Temporal.ZonedDateTime.prototype.millisecond
• 6.3.13 get Temporal.ZonedDateTime.prototype.microsecond
• 6.3.14 get Temporal.ZonedDateTime.prototype.nanosecond
• 6.3.15 get Temporal.ZonedDateTime.prototype.epochSeconds
• 6.3.16 get Temporal.ZonedDateTime.prototype.epochMilliseconds
• 6.3.17 get Temporal.ZonedDateTime.prototype.epochMicroseconds
• 6.3.18 get Temporal.ZonedDateTime.prototype.epochNanoseconds
• 6.3.19 get Temporal.ZonedDateTime.prototype.dayOfWeek
• 6.3.20 get Temporal.ZonedDateTime.prototype.dayOfYear
• 6.3.21 get Temporal.ZonedDateTime.prototype.weekOfYear
• 6.3.22 get Temporal.ZonedDateTime.prototype.yearOfWeek
• 6.3.23 get Temporal.ZonedDateTime.prototype.hoursInDay
• 6.3.24 get Temporal.ZonedDateTime.prototype.daysInWeek
• 6.3.25 get Temporal.ZonedDateTime.prototype.daysInMonth
• 6.3.26 get Temporal.ZonedDateTime.prototype.daysInYear
• 6.3.27 get Temporal.ZonedDateTime.prototype.monthsInYear
• 6.3.28 get Temporal.ZonedDateTime.prototype.inLeapYear
• 6.3.29 get Temporal.ZonedDateTime.prototype.offsetNanoseconds
• 6.3.30 get Temporal.ZonedDateTime.prototype.offset
• 6.3.31 Temporal.ZonedDateTime.prototype.with ( temporalZonedDateTimeLike [ , options ] )
• 6.3.32 Temporal.ZonedDateTime.prototype.withPlainTime ( [ plainTimeLike ] )
• 6.3.33 Temporal.ZonedDateTime.prototype.withTimeZone ( timeZoneLike )
• 6.3.34 Temporal.ZonedDateTime.prototype.withCalendar ( calendarLike )
• 6.3.35 Temporal.ZonedDateTime.prototype.add ( temporalDurationLike [ , options ] )
• 6.3.36 Temporal.ZonedDateTime.prototype.subtract ( temporalDurationLike [ , options ] )
• 6.3.37 Temporal.ZonedDateTime.prototype.until ( other [ , options ] )
• 6.3.38 Temporal.ZonedDateTime.prototype.since ( other [ , options ] )
• 6.3.39 Temporal.ZonedDateTime.prototype.round ( roundTo )
• 6.3.40 Temporal.ZonedDateTime.prototype.equals ( other )
• 6.3.41 Temporal.ZonedDateTime.prototype.toString ( [ options ] )
• 6.3.42 Temporal.ZonedDateTime.prototype.toLocaleString ( [ locales [ , options ] ] ) DEFERRED
• 6.3.43 Temporal.ZonedDateTime.prototype.toJSON ( )
• 6.3.44 Temporal.ZonedDateTime.prototype.valueOf ( )
• 6.3.45 Temporal.ZonedDateTime.prototype.startOfDay ( )
• 6.3.46 Temporal.ZonedDateTime.prototype.getTimeZoneTransition ( directionParam )
• 6.3.47 Temporal.ZonedDateTime.prototype.toInstant ( )
• 6.3.48 Temporal.ZonedDateTime.prototype.toPlainDate ( )
• 6.3.49 Temporal.ZonedDateTime.prototype.toPlainTime ( )
• 6.3.50 Temporal.ZonedDateTime.prototype.toPlainDateTime ( )