Returns a copy of this {@code ZonedDateTime} with the specified number of hours subtracted.
!(p)
This operates on the instant time-line, such that subtracting one hour will
always be a duration of one hour earlier.
This may cause the local date-time to change by an amount other than one hour.
Note that this is a different approach to that used by days, months and years,
thus subtracting one day is not the same as adding 24 hours.
!(p)
For example, consider a time-zone, such as 'Europe/Paris', where the
Autumn DST cutover means that the local times 02:00 to 02:59 occur twice
changing from offset +02:00 _in summer to +01:00 _in winter.
!(ul)
!(li)Subtracting one hour from 03:30+01:00 will result _in 02:30+01:00
(both _in winter time)
!(li)Subtracting one hour from 02:30+01:00 will result _in 02:30+02:00
(moving from winter to summer time)
!(li)Subtracting one hour from 02:30+02:00 will result _in 01:30+02:00
(both _in summer time)
!(li)Subtracting three hours from 03:30+01:00 will result _in 01:30+02:00
(moving from winter to summer time)
</ul>
!(p)
This instance is immutable and unaffected by this method call.
@param hours the hours to subtract, may be negative
@return a {@code ZonedDateTime} based on this date-time with the hours subtracted, not null
@throws DateTimeException if the result exceeds the supported date range
Returns a copy of this {@code ZonedDateTime} with the specified number of hours subtracted. !(p) This operates on the instant time-line, such that subtracting one hour will always be a duration of one hour earlier. This may cause the local date-time to change by an amount other than one hour. Note that this is a different approach to that used by days, months and years, thus subtracting one day is not the same as adding 24 hours. !(p) For example, consider a time-zone, such as 'Europe/Paris', where the Autumn DST cutover means that the local times 02:00 to 02:59 occur twice changing from offset +02:00 _in summer to +01:00 _in winter. !(ul) !(li)Subtracting one hour from 03:30+01:00 will result _in 02:30+01:00 (both _in winter time) !(li)Subtracting one hour from 02:30+01:00 will result _in 02:30+02:00 (moving from winter to summer time) !(li)Subtracting one hour from 02:30+02:00 will result _in 01:30+02:00 (both _in summer time) !(li)Subtracting three hours from 03:30+01:00 will result _in 01:30+02:00 (moving from winter to summer time) </ul> !(p) This instance is immutable and unaffected by this method call.
@param hours the hours to subtract, may be negative @return a {@code ZonedDateTime} based on this date-time with the hours subtracted, not null @throws DateTimeException if the result exceeds the supported date range