Crate brightdate 

BrightDate — Universal Decimal Time System

A scientifically grounded, timezone-free time representation anchored at J2000.0. One f64 value. Trivially sortable, diffable, and storable.

Format

DDDDD.ddddd
↑           ↑
│           Fractional day (decimal time-of-day)
Integer days since J2000.0 epoch

• Epoch: J2000.0 = 2000-01-01T12:00:00.000 TT = 2000-01-01T11:58:55.816 UTC (Unix ms 946_727_935_816) = JD 2_451_545.0 = MJD 51_544.5.
• Unit: SI days (86400 SI seconds).
• Timescale: TAI-coherent. The BrightDate clock ticks uniformly and has no leap-second discontinuities; leap seconds intervene only when converting to/from UTC labels (Unix ms, ISO strings).

Quick Start

use brightdate::BrightDate;

let bd = BrightDate::from_unix_ms(1_700_000_000_000.0).unwrap();
println!("{}", bd);          // e.g. "8704.09722"
println!("{}", bd.to_log_string()); // "[8704.09722]"

let tomorrow = bd.add_days(1.0);
let elapsed = tomorrow.difference(&bd); // 1.0

Re-exports

pub use display_label::compare_bd_labels;

pub use display_label::format_bd;

pub use display_label::format_bd_label;

pub use display_label::parse_bd;

pub use display_label::parse_bd_label;

pub use display_label::BrightLabel;

pub use display_label::DEFAULT_BD_PRECISION;

pub use exact::ExactBrightDate;

pub use exact_atto::ExactBrightAtto;

pub use lens::brightdate_to_attoseconds;

pub use lens::brightdate_to_picoseconds;

pub use lens::ticks_to_brightdate;

pub use lens::ATTOSECONDS_PER_DAY;

pub use lens::ATTOSECONDS_PER_PICOSECOND;

pub use lens::ATTOSECONDS_PER_SECOND;

pub use lens::PICOSECONDS_PER_DAY;

pub use instant::BrightInstant;

pub use types::BrightDateComponents;

pub use types::BrightDateOptions;

pub use types::BrightDuration;

pub use types::Precision;

Modules

arithmetic

Arithmetic operations on BrightDate values.

astronomy

Astronomical utilities: sidereal time, solar position, lunar phase.

calendar

BrightDate Calendar Utilities

civil_time

BrightDate Local-Clock Bridge.

comparisons

Comparison and set utilities for collections of BrightDate values.

constants

Core constants for the BrightDate system.

conversions

Conversions between BrightDate values and other time representations.

display_label

Display Label — BD / PBD prefix convention for BrightDate scalars.

exact

ExactBrightDate — bit-exact picosecond-precision time.

exact_atto

ExactBrightAtto — canonical v2 engine (attoseconds since J2000.0).

formatting

Formatting BrightDate values as human-readable strings.

geodesy

BrightSpace Geodesy

instant

BrightInstant — an exact, lossless time representation.

interplanetary

BrightDate Interplanetary Utilities

intervals

BrightDate intervals — a closed [start, end] time span.

leap_seconds

Leap-second table lookup utilities.

lens

BrightDate lens — integer engine ↔ decimal-day presentation.

relativity

BrightDate Relativity Module

scheduling

BrightDate Scheduling Utilities

serialization

BrightDate Serialization

spacetime

BrightDate Spacetime Standard

timezones

BrightDate Timezone Utilities

types

Core type definitions for BrightDate.

validation

Validation utilities for BrightDate inputs.

Structs

BrightDate

Immutable BrightDate value — decimal days since J2000.0 epoch.