Pay-per-view events air at specific times.
You can order Pay-per-view programming up to 24 hours in advance. For major events, it may be extended to 72 hours.
You can still order Pay-per-view programming after it has started, up until the half-way point. However, you will not be able to restart it.
Please note that once a Pay-per-view event is ordered, it cannot be cancelled or refunded.