The concept of stopping time is purely hypothetical and not currently possible according to our current understanding of physics. However, if we were to speculate about the consequences of such an event, it would depend on the nature of time stopping and restarting.
If time were to stop completely, meaning that all motion and processes in the universe cease, it is difficult to predict the specific effects on our planet. Since time governs all changes and interactions, the halting of time would likely freeze everything in place. However, the implications would go beyond the immediate consequences.
Without time, there would be no movement of particles or energy, including the flow of air, the circulation of ocean currents, and the Earth's rotation. As a result, essential processes such as weather patterns, biological functions, and natural cycles would come to a standstill. This would likely have severe consequences for life on Earth, including the disruption of ecosystems, the halting of metabolism, and the absence of necessary resources for survival.
Restarting time after it has been stopped would likely have chaotic effects, as all the frozen processes and interactions suddenly resume. The sudden release of pent-up energy and the reestablishment of motion could potentially cause catastrophic events. For example, if the Earth's rotation were to resume abruptly, it could lead to violent tectonic activity, earthquakes, and tsunamis.
It's important to remember that this scenario is purely speculative and rooted in science fiction. Our current understanding of time and the laws of physics does not support the possibility of stopping or restarting time.