Intravenous thrombolysis (IVT) administered within 4.5 hours was linked to significantly lower risk for neurological deterioration in acute pontine infarction than other antithrombotic therapies ...

 However, if you miss it, you will have to wait till 2095. Comet 12P/Pons-Brooks, with its nucleus measuring approximately 30 km across, is currently visible in the constellation of Aries.