HowardHinnant/date

Features

• Date and Time Libraries - Provides a comprehensive suite of utilities for constructing and manipulating date and time values.
• High-Precision Physical Time Tracking - Measures physical time using UTC, TAI, and GPS clocks while accounting for leap seconds and clock drift.
• Time Zone Management - Converts time points between different geographic zones using the IANA Time Zone Database and custom offset rules.
• Date and Time Utilities - Provides a comprehensive set of tools for parsing, formatting, and calculating dates and times with high precision.
• Date String Parsers - Extracts structured time and date information from text streams using custom format patterns and locale-aware flags.
• Clock Domain Conversion - Converts time points between different clock domains, such as translating system time into UTC or TAI.
• Physical Time Tracking - Maintains continuous physical seconds using UTC, TAI, and GPS clocks.
• Clock Domain Casting - Implements a unified mechanism for transforming time values between different clock systems while preserving the absolute moment.
• IANA Time Zone Database Integrations - Uses a structured representation of the IANA time zone database to handle regional offsets and historical transitions.
• Leap Second Management - Performs high-precision time calculations that account for leap seconds.
• Multi-Calendar System Implementations - Supports conversions between proleptic Gregorian, Julian, ISO week, and Tabular Islamic calendars.
• Multi-Calendar Systems - Supports conversions and calculations across Gregorian, Julian, ISO week, and Tabular Islamic calendars.
• Temporal Arithmetic - Calculates the precise duration between two time points in terms of years, months, weeks, or days.
• Physical Clock Implementations - Tracks physical time using UTC, TAI, and GPS clocks to account for leap seconds.
• Type-Safe Clock Domains - Provides distinct types for system, UTC, and TAI time to prevent logic errors during clock conversion.
• Calendar System Interoperability - Translates dates between Gregorian, Julian, ISO week, and Tabular Islamic calendar systems.
• Civil Date Management - Provides a system for creating and manipulating dates using a proleptic Gregorian calendar.
• Custom Time Zone Rules - Allows the creation of user-defined time zone rules and offsets for zoned time calculations.
• Historical Calendar Calculations - Calculates dates and converts between civil, Julian, and ISO-week systems using a proleptic Julian calendar.
• Proleptic Calendar Logic - Calculates historical dates by extending the Gregorian and Julian calendars backward in time.
• Temporal Decompositions - Decomposes durations since midnight into structured hours, minutes, seconds, and fractional seconds.
• Date Difference Calculators - Computes the precise duration between two time points in terms of years, months, weeks, or days.
• Time Zone Converters - Converts local calendar date and time to UTC time points based on specific geographic zone rules.
• Calendar Arithmetic - Provides logic to add or subtract years and weeks from ISO week dates.
• Calendar Conversions - Transforms civil or ISO-week dates into the proleptic Tabular Islamic calendar system.
• Calendar Logic Utilities - Determines the day of the week for a given system time point using ISO 8601 encoding.
• Tabular Islamic Calendar Conversions - Implements the proleptic tabular Islamic calendar through mathematical transformations from civil and ISO-week dates.
• Time Point Conversions - Transforms between system time points, local time points, and field-based representations.
• ISO 8601 Standards - Implements ISO 8601 standards to map calendar dates to specific years, week numbers, and weekdays.
• Locale-Aware Value Formatting - Translates time points into strings using customizable format flags and system-specific locale settings.
• Calendar Field Decomposition - Provides a mechanism to decompose continuous time points into discrete year, month, and day fields for calendar operations.
• Date and Time Formatting - Converts date and time objects into human-readable strings using locale-aware flags and custom patterns.
• General Utilities - Date and time library based on C++11/14/17 standards.

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