Trait chrono::offset::TimeZone
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pub trait TimeZone: Sized {
type Offset: Offset;
fn from_offset(offset: &Self::Offset) -> Self;
fn offset_from_local_date(&self, local: &NaiveDate) -> LocalResult<Self::Offset>;
fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<Self::Offset>;
fn offset_from_utc_date(&self, utc: &NaiveDate) -> Self::Offset;
fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> Self::Offset;
fn ymd(&self, year: i32, month: u32, day: u32) -> Date<Self> { ... }
fn ymd_opt(&self, year: i32, month: u32, day: u32) -> LocalResult<Date<Self>> { ... }
fn yo(&self, year: i32, ordinal: u32) -> Date<Self> { ... }
fn yo_opt(&self, year: i32, ordinal: u32) -> LocalResult<Date<Self>> { ... }
fn isoywd(&self, year: i32, week: u32, weekday: Weekday) -> Date<Self> { ... }
fn isoywd_opt(&self, year: i32, week: u32, weekday: Weekday) -> LocalResult<Date<Self>> { ... }
fn timestamp(&self, secs: i64, nsecs: u32) -> DateTime<Self> { ... }
fn timestamp_opt(&self, secs: i64, nsecs: u32) -> LocalResult<DateTime<Self>> { ... }
fn datetime_from_str(&self, s: &str, fmt: &str) -> ParseResult<DateTime<Self>> { ... }
fn from_local_date(&self, local: &NaiveDate) -> LocalResult<Date<Self>> { ... }
fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<DateTime<Self>> { ... }
fn from_utc_date(&self, utc: &NaiveDate) -> Date<Self> { ... }
fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime<Self> { ... }
}The time zone.
Associated Types
type Offset: Offset
An associated offset type.
This type is used to store the actual offset in date and time types.
The original TimeZone value can be recovered via TimeZone::from_offset.
Required Methods
fn from_offset(offset: &Self::Offset) -> Self
Reconstructs the time zone from the offset.
fn offset_from_local_date(&self, local: &NaiveDate) -> LocalResult<Self::Offset>
Creates the offset(s) for given local NaiveDate if possible.
fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<Self::Offset>
Creates the offset(s) for given local NaiveDateTime if possible.
fn offset_from_utc_date(&self, utc: &NaiveDate) -> Self::Offset
Creates the offset for given UTC NaiveDate. This cannot fail.
fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> Self::Offset
Creates the offset for given UTC NaiveDateTime. This cannot fail.
Provided Methods
fn ymd(&self, year: i32, month: u32, day: u32) -> Date<Self>
Makes a new Date from year, month, day and the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Fails on the out-of-range date, invalid month and/or day.
fn ymd_opt(&self, year: i32, month: u32, day: u32) -> LocalResult<Date<Self>>
Makes a new Date from year, month, day and the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Returns None on the out-of-range date, invalid month and/or day.
fn yo(&self, year: i32, ordinal: u32) -> Date<Self>
Makes a new Date from year, day of year (DOY or "ordinal") and the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Fails on the out-of-range date and/or invalid DOY.
fn yo_opt(&self, year: i32, ordinal: u32) -> LocalResult<Date<Self>>
Makes a new Date from year, day of year (DOY or "ordinal") and the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Returns None on the out-of-range date and/or invalid DOY.
fn isoywd(&self, year: i32, week: u32, weekday: Weekday) -> Date<Self>
Makes a new Date from ISO week date (year and week number), day of the week (DOW) and
the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The resulting Date may have a different year from the input year.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Fails on the out-of-range date and/or invalid week number.
fn isoywd_opt(&self, year: i32, week: u32, weekday: Weekday) -> LocalResult<Date<Self>>
Makes a new Date from ISO week date (year and week number), day of the week (DOW) and
the current time zone.
This assumes the proleptic Gregorian calendar, with the year 0 being 1 BCE.
The resulting Date may have a different year from the input year.
The time zone normally does not affect the date (unless it is between UTC-24 and UTC+24),
but it will propagate to the DateTime values constructed via this date.
Returns None on the out-of-range date and/or invalid week number.
fn timestamp(&self, secs: i64, nsecs: u32) -> DateTime<Self>
Makes a new DateTime from the number of non-leap seconds
since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp")
and the number of nanoseconds since the last whole non-leap second.
Fails on the out-of-range number of seconds and/or invalid nanosecond.
fn timestamp_opt(&self, secs: i64, nsecs: u32) -> LocalResult<DateTime<Self>>
Makes a new DateTime from the number of non-leap seconds
since January 1, 1970 0:00:00 UTC (aka "UNIX timestamp")
and the number of nanoseconds since the last whole non-leap second.
Returns None on the out-of-range number of seconds and/or invalid nanosecond.
fn datetime_from_str(&self, s: &str, fmt: &str) -> ParseResult<DateTime<Self>>
Parses a string with the specified format string and
returns a DateTime with the current offset.
See the format::strftime module on the supported escape sequences.
If the format does not include offsets, the current offset is assumed; otherwise the input should have a matching UTC offset.
See also DateTime::parse_from_str which gives a local DateTime
with parsed FixedOffset.
fn from_local_date(&self, local: &NaiveDate) -> LocalResult<Date<Self>>
Converts the local NaiveDate to the timezone-aware Date if possible.
fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<DateTime<Self>>
Converts the local NaiveDateTime to the timezone-aware DateTime if possible.
fn from_utc_date(&self, utc: &NaiveDate) -> Date<Self>
Converts the UTC NaiveDate to the local time.
The UTC is continuous and thus this cannot fail (but can give the duplicate local time).
fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime<Self>
Converts the UTC NaiveDateTime to the local time.
The UTC is continuous and thus this cannot fail (but can give the duplicate local time).