180 Days From Today

What 180 days means

One hundred eighty days out is the most common stand-in for "six months" or "half a year" — it's the figure cited for many visa validity periods, half-year subscription terms, and biannual performance or medical review cycles.

It isn't exactly six calendar months, though: because a year averages 365.25 days, half a year averages roughly 182.6 days, so an exact six-calendar-month mark (via the Date Plus or Minus Days Calculator's month mode) typically lands a day or two after the flat 180-day count, depending on which specific months are crossed.

One hundred eighty days is also the maximum stay period cited in the US's own 180-day substantial presence rule used in certain tax-residency calculations, giving the figure genuine legal weight beyond its casual "half a year" usage.

The 180-day mark is also specifically used in some jurisdictions' residency-day-count rules for determining tax status, since spending 183 or more days in a location in a year is a commonly cited (though jurisdiction-specific) threshold for tax residency.