From the SEC filing...

The warrants will become exercisable on the later of:

•   30 days after the completion of our initial business combination, and
•   12 months from the closing of this offering;

provided in each case that we have an effective registration statement under the Securities Act covering the shares of Class A common stock issuable upon exercise of the warrants and a current prospectus relating to them is available (or we permit holders to exercise their warrants on a cashless basis under the circumstances specified in the warrant agreement).