Struct Ethiopian 

pub struct Ethiopian(/* private fields */);

The Ethiopian Calendar

The Ethiopian calendar is a variant of the Coptic calendar. It differs from the Coptic calendar by the names of the months as well as the era.

This implementation can be constructed in two modes: using the Amete Alem era scheme, or the Amete Mihret era scheme (the default), see EthiopianEraStyle for more info.

This implementation extends proleptically for dates before the calendar’s creation.

This corresponds to the "ethiopic" and "ethioaa" CLDR calendars, with "ethiopic" being for EthiopianEraStyle::AmeteMihret

Era codes

This calendar always uses the aa era, where 1 Amete Alem is 5493 BCE. Dates before this era use negative years. Dates before that use negative year numbers.

In the Amete Mihret scheme it uses the additional am era, 1 Amete Mihret is 9 CE.

Months and days

The 13 months are called Mäskäräm (M01, 30 days), Ṭəqəmt (M02, 30 days), Ḫədar (M03, 30 days), Taḫśaś (M04, 30 days), Ṭərr (M05, 30 days), Yäkatit (M06, 30 days), Mägabit (M07, 30 days), Miyazya (M08, 30 days), Gənbo (M09, 30 days), Säne (M10, 30 days), Ḥamle (M11, 30 days), Nähase (M12, 30 days), Ṗagʷəmen (M13, 5 days).

In leap years (years divisible by 4), Ṗagʷəmen gains a 6th day.

Standard years thus have 365 days, and leap years 366.

Calendar drift

The Ethiopian calendar has the same year lengths and leap year rules as the Coptic and Julian calendars, so it experiences the same drift of 1 day in ~128 years with respect to the seasons.

Implementations

impl Ethiopian

pub const fn new() -> Ethiopian

Construct a new Ethiopian Calendar for the Amete Mihret era naming scheme

pub const fn new_with_era_style(era_style: EthiopianEraStyle) -> Ethiopian

Construct a new Ethiopian Calendar with an explicit EthiopianEraStyle.

pub fn era_style(&self) -> EthiopianEraStyle

Returns the EthiopianEraStyle used by this calendar.

Trait Implementations

impl Calendar for Ethiopian

type DateInner = EthiopianDateInner

The internal type used to represent dates

type Year = <Coptic as Calendar>::Year

The type of YearInfo returned by the date

type DifferenceError = <Coptic as Calendar>::DifferenceError

The type of error returned by until

fn from_codes( &self, era: Option<&str>, year: i32, month_code: MonthCode, day: u8, ) -> Result<<Ethiopian as Calendar>::DateInner, DateError>

Construct a date from era/month codes and fields

fn from_rata_die(&self, rd: RataDie) -> <Ethiopian as Calendar>::DateInner

Construct the date from a RataDie

fn to_rata_die(&self, date: &<Ethiopian as Calendar>::DateInner) -> RataDie

Obtain a RataDie from this date

fn has_cheap_iso_conversion(&self) -> bool

Whether from_iso/to_iso is more efficient than from_rata_die/to_rata_die.

fn months_in_year(&self, date: &<Ethiopian as Calendar>::DateInner) -> u8

Count the number of months in a given year, specified by providing a date from that year

fn days_in_year(&self, date: &<Ethiopian as Calendar>::DateInner) -> u16

Count the number of days in a given year, specified by providing a date from that year

fn days_in_month(&self, date: &<Ethiopian as Calendar>::DateInner) -> u8

Count the number of days in a given month, specified by providing a date from that year/month

fn year_info( &self, date: &<Ethiopian as Calendar>::DateInner, ) -> <Ethiopian as Calendar>::Year

Information about the year

fn is_in_leap_year(&self, date: &<Ethiopian as Calendar>::DateInner) -> bool

Calculate if a date is in a leap year

fn month(&self, date: &<Ethiopian as Calendar>::DateInner) -> MonthInfo

The calendar-specific month represented by date

fn day_of_month(&self, date: &<Ethiopian as Calendar>::DateInner) -> DayOfMonth

The calendar-specific day-of-month represented by date

fn day_of_year(&self, date: &<Ethiopian as Calendar>::DateInner) -> DayOfYear

Information of the day of the year

fn debug_name(&self) -> &'static str

Obtain a name for the calendar for debug printing

fn calendar_algorithm(&self) -> Option<CalendarAlgorithm>

Returns the CalendarAlgorithm that is required to match when parsing into this calendar.

fn from_iso(&self, iso: IsoDateInner) -> Self::DateInner

Construct the date from an ISO date.

fn to_iso(&self, date: &Self::DateInner) -> IsoDateInner

Obtain an ISO date from this date.

fn extended_year(&self, date: &Self::DateInner) -> i32

The extended year.

impl CldrCalendar for Ethiopian

type YearNamesV1 = DatetimeNamesYearEthiopianV1

The data marker for loading year symbols for this calendar.

type MonthNamesV1 = DatetimeNamesMonthEthiopianV1

The data marker for loading month symbols for this calendar.

type SkeletaV1 = DatetimePatternsDateEthiopianV1

The data marker for loading skeleton patterns for this calendar.

impl Clone for Ethiopian

fn clone(&self) -> Ethiopian

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Ethiopian

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Ethiopian

fn default() -> Ethiopian

Returns the “default value” for a type.

impl From<Ethiopian> for AnyCalendar

fn from(value: Ethiopian) -> AnyCalendar

Converts to this type from the input type.

impl Hash for Ethiopian

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoAnyCalendar for Ethiopian

fn to_any(self) -> AnyCalendar

Convert this calendar into an AnyCalendar, moving it

fn kind(&self) -> AnyCalendarKind

The AnyCalendarKind enum variant associated with this calendar

fn from_any(any: AnyCalendar) -> Result<Ethiopian, AnyCalendar>

Move an AnyCalendar into a Self, or returning it as an error if the types do not match.

fn from_any_ref(any: &AnyCalendar) -> Option<&Ethiopian>

Convert an AnyCalendar reference into a Self reference.

fn date_to_any(&self, d: &<Ethiopian as Calendar>::DateInner) -> AnyDateInner

Convert a date for this calendar into an AnyDateInner

impl Ord for Ethiopian

fn cmp(&self, other: &Ethiopian) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Ethiopian

fn eq(&self, other: &Ethiopian) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Ethiopian

fn partial_cmp(&self, other: &Ethiopian) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Ethiopian

impl Eq for Ethiopian

impl IntoFormattableAnyCalendar for Ethiopian

impl StructuralPartialEq for Ethiopian

impl UnstableSealed for Ethiopian