Time Door

You create a portal that reaches through time in an unoccupied space you can see within range. The portal reaches to a point in time up to one century in the past or the future. The portal is a circular opening the floats up to three feet off the ground and has a 5 to 20 foot radius. The portal has a front and a back in the point in time you chose and the one you are currently in. Travel through the portal is only possible through the front of the portal, anything that moves through the front of the portal is instantly transported the other point in time linked by the portal, appearing in the unoccupied space nearest the portal. The portal only allows travel through time, not space.

The portal disappears when the spell ends, leaving no trace of its existence. At any time during the spell's duration you can close the portal and end the spell early as a bonus action.