On what year's 1040 is interest from a 1-year CD reported?

I opened a 1-year CD in February 2018 and the interest is payable upon maturity in February 2019. The bank informed me I wouldn't get a 1099-INT until the CD matured. My question is: When is the interest reportable on my IRS Form 1040? On my 2018 Federal tax return OR on my 2019 return?