Hi
Yes, The task won’t start until 4:30 as you have set the time. The Task Scheduler Microsoft Management console (MMC) snap-in helps you schedule automated tasks that perform actions at a specific time or when a certain event occurs. It maintains a library of all scheduled tasks, providing an organized view of the tasks and a convenient point of access for managing them. From within the library, you can run, disable, modify, and delete tasks. The Task Scheduler user interface (UI) is a Microsoft Management console (MMC) snap-in that replaces the Scheduled Tasks Explorer extension in Windows XP.
The two key concepts involved in scheduling a task are triggers and actions. A trigger causes a task to run and an action is the work that is performed when the task is run. The actions a task can perform include running a program, sending an e-mail message, and showing a message box. For example, you can send an e-mail when a certain event entry is logged in the event log or run a maintenance script when a user logs on to a computer. Occurrences that can trigger a task to run include: a computer starting up, a computer entering an idle state, or a user unlocking a workstation. In addition, you can schedule a task to run at a specified time.
A task will run if all of its conditions are met after the task is triggered to start. Conditions are split up into three categories: idle conditions, power conditions, and network conditions. A task's conditions are displayed on the Conditions tab of the Task Properties or Create Task dialog box.
Idle ConditionsYou can set a condition that tells the task to run only if the computer is in an idle state for a specific amount of time when a trigger is activated. When you set this condition, you also set the amount of time to wait (after the task is triggered) for the computer to enter an idle state.
Power Conditions
You can set a condition that tells the task to run only if the computer is on AC power (not battery power) when the task trigger is activated. If this condition is set, you can also set a condition to stop the task if the computer switches to battery power. If both of these conditions are set for a task, then you have ensured that the task will only run when the computer is on AC power.
Note: When the Task Scheduler service wakes, the computer to run a task, the screen may remain off even though the computer is no longer in the sleep or hibernate mode. The screen will turn on when Windows detects that a user has returned to use the computer
Network Conditions
You can set a condition to run the task only if a specific named network connection is available or if any network connection is available when the task's trigger is activated. If your task action requires a network connection to execute, then set this condition.
You may also refer the link mentioned below.