Today, the #equinox will occur at about 21:24Z -- just over twelve and a half hours from writing this. It marks the moment when the #Sun is directly overhead at #Noon at the #equator. Given the time it will occur, the event will take place over the #PacificOcean, around 142.5°W. It marks the start of #Spring in the #NorthernHemisphere and #Autumn in the #SouthernHemisphere.