Calculate the date 180 days from today — roughly six months out, the span behind many statute-of-limitations and half-year deadlines.
Day of the week
Weekend?
Defaults to today.
One hundred eighty days is the long-range marker that shows up in legal and life-planning contexts where a month or a quarter is too short a horizon: many small-claims and insurance-notice statutes give claimants a 180-day window to file, passports and re-entry permits are sometimes required to have at least six months of remaining validity, and 180-day check-ins are a common way to mark half-year milestones like a probationary employment period, a savings goal, or a medical follow-up. Because 180 days is close to but not identical to "six months" — six calendar months can run anywhere from 180 to 184 days — a precise day count matters more here than for shorter, everyday intervals. This tool adds 180 literal days to a start date and reports the resulting date and its weekday.
Someone files an insurance claim notice with a 180-day statutory deadline starting July 4, 2026. The final filing date is December 31, 2026, a Thursday — worth marking well in advance, since a claim filed even one day later can be barred regardless of its merits.
A traveler checks a "six months' validity" passport rule before booking international flights. Counting 180 days from a planned July 4, 2026 departure lands on December 31, 2026; if the passport expires before that date, several countries will deny boarding or entry even though the passport is not yet technically expired.
Is 180 days exactly six months?
Close, but not exact. Six consecutive calendar months add up to somewhere between 180 and 184 days depending on which months are included, so a strict "180-day" legal deadline can fall a few days before the naive "same date, six months later" mark.
What is a statute-of-limitations notice period?
Certain claims — some insurance disputes, government-entity claims, and specific small-claims matters — require written notice within a fixed window, often 180 days from the triggering event, after which the right to file may be permanently lost. Deadlines vary significantly by jurisdiction and claim type.
Why do some countries require six months of passport validity?
Immigration authorities in many countries want buffer time in case a traveler's stay is extended or delayed, so they require a passport to remain valid well past the visit, commonly six months (180-plus days) beyond the entry or intended exit date.
Is 180 days used for employee probation periods?
Yes, some employers — particularly for roles with a longer ramp-up curve, like management or specialized technical positions — set a six-month (180-day) probationary period instead of the more common 90 days.