Re-Entry Interval (REI) Timer

This timer does one piece of arithmetic: it adds the Restricted-Entry Interval (REI) printed on your product label to the moment your application ended, and shows the resulting "Do Not Enter Until" date and time. That is the only thing it does — the product label is the legal standard; the tool never looks up, defaults, caps, or verifies an REI.

Worked example. Application ends 8:00 AM on Mar 15 with a 24-hour label REI → safe re-entry is 8:00 AM on Mar 16. A 4:00 PM end with a 12-hour REI clears the next morning at 4:00 AM.

Hours or days. Enter the value exactly as the label states it. The hours/days toggle converts a days entry to hours (1 day = 24 hours) — it does not round your label value. The quick-pick chips (12 / 24 / 48 / 72 hours) are common label values offered as conveniences, never as minimums or caps.

Wall-clock, DST-naive. The math adds clock hours and does not adjust for daylight-saving transitions. If your interval crosses a spring-forward or fall-back change, double-check the posted time against a clock. The "time remaining" countdown is measured against your device's current time when the result is shown.

Method: the add-the-interval approach follows the Yielix REI & PHI Tracker worked example; the REI definition and where to read it on the label ("Agricultural Use Requirements" / "Directions for Use") follow the US EPA worker-protection guidance; the 12–72 hour toxicity-based range is from Ohio State Extension. See Sources below.

Formula: safe re-entry = application end datetime + REI hours

See Sources below ↓