If the setting time is changed in halfway, it needs to turn off the power, then turn on the power again, it restarts counting time from zero to the new set time, otherwise it will stop at the first setting time.
Uma isikhathi kulungiselelwa kwashintsha ngo maphakathi, idinga noma uvala amandla kagesi, bese uvule amandla futhi, restarts ekubaleni isikhathi kusuka zero kuya isikhathi esisha isethi, kungenjalo uzoyeka ekushoneni okokuqala.