DTE stands for Days to Expiration — how many days until an option expires. A 30DTE option has a month left; a 0DTE option expires today. It's a simple count, but it drives one of the most important forces in options: time decay.

Why DTE matters

An option's extrinsic (time) value erodes as expiration approaches — theta decay — and that erosion accelerates as DTE shrinks. A far-dated option loses time value slowly; a near-dated one bleeds fast. So DTE tells you how much time your thesis has to play out and how quickly the clock is working against a long option.

Why 0DTE is a different animal

0DTE — zero days to expiration — is the extreme: the option expires today, so time decay is brutal and fast, and the position is pure short-term direction with no tomorrow. That makes 0DTE ideal for intraday scalping (cheap, responsive, no overnight risk) but unforgiving (theta punishes hesitation). It's the instrument NoVo is built around — see the 0DTE scalping guide.

DTE is the countdown clock on your option. The lower it goes, the faster time value melts, and at 0DTE, the clock runs out today.

The quick takeaway

DTE = days left until expiration; 0DTE = expires today. Fewer days means faster time decay and a more purely directional trade. Knowing the DTE is knowing how much time — and how much decay pressure — your option carries. Related: choosing an expiration for a day trade.