Module chrono::offset

The time zone, which calculates offsets from the local time to UTC.

There are four operations provided by the TimeZone trait:

1. Converting the local NaiveDateTime to DateTime<Tz>
2. Converting the UTC NaiveDateTime to DateTime<Tz>
3. Converting DateTime<Tz> to the local NaiveDateTime
4. Constructing DateTime<Tz> objects from various offsets

1 is used for constructors. 2 is used for the with_timezone method of date and time types. 3 is used for other methods, e.g. year() or format(), and provided by an associated type which implements Offset (which then passed to TimeZone for actual implementations). Technically speaking TimeZone has a total knowledge about given timescale, but Offset is used as a cache to avoid the repeated conversion and provides implementations for 1 and 3. An TimeZone instance can be reconstructed from the corresponding Offset instance.

Structs

• FixedOffset
  The time zone with fixed offset, from UTC-23:59:59 to UTC+23:59:59.
• Local
  The local timescale.
• Utc
  The UTC time zone. This is the most efficient time zone when you don’t need the local time. It is also used as an offset (which is also a dummy type).

Enums

• LocalResult
  The conversion result from the local time to the timezone-aware datetime types.

Traits

• Offset
  The offset from the local time to UTC.
• TimeZone
  The time zone.