op ZonedTime.-

Calendar arithmetic: the wall clock moves back by the period; the offset may change with daylight saving time.

Example:

oxl✓ checked in CI

fn main() io {
  print("{(2026-03-30T12:00.in(tz"Europe/Berlin")! - 1.day()).toIso()}")
}

Output

2026-03-29T12:00:00+02:00[Europe/Berlin]

pub(api) static op -(a: ZonedTime, p: Period) -> ZonedTime

Since. 1.0.0-beta

Parameters

Name	Type
`a`	`ZonedTime`
`p`	`Period`

none declared (pure unless the body says otherwise)

Defined in: std/time/time.oxl:2328