DateTime

// A moment on the calendar, from 0001-01-01 to 9999-12-31, to 100 ns, and whose clock it reads (Kind).
// `date + span`, `date - span`, `a - b` (a TimeSpan) and the comparisons work on it; as text it is
// `MM/dd/yyyy HH:mm:ss`, and ToString("o") gives the round-trip form.
public struct System.DateTime : System.IHashable<System.DateTime>, System.IComparable<System.DateTime>
{
    field data: u64
    // Throws an ArgumentOutOfRangeError: the message is made here, so the fast paths that may throw allocate nothing.
    static method OutOfRange(which: i32) -> void
    // A DateTime from its bits (ticks already checked).
    static method Of(data: u64) -> System.DateTime
    // The ticks of a date (checked), as .NET's DateToTicks.
    static method DateTicks(year: i32, month: i32, day: i32) -> i64
    static method TimeTicks(hour: i32, minute: i32, second: i32) -> i64
    // This moment `value` ticks later (an ArgumentOutOfRangeError past the calendar's ends).
    method Moved(value: i64) -> System.DateTime
    // `value` units of `scale` ticks later: whole units exactly, the fraction rounded toward zero.
    method AddUnits(value: f64, most: i64, scale: i64) -> System.DateTime
    // Ticks since 0001-01-01 00:00:00.
    constructor DateTime(ticks: i64)
    constructor DateTime(ticks: i64, kind: System.DateTimeKind)
    constructor DateTime(year: i32, month: i32, day: i32)
    constructor DateTime(year: i32, month: i32, day: i32, hour: i32, minute: i32, second: i32)
    constructor DateTime(year: i32, month: i32, day: i32, hour: i32, minute: i32, second: i32, kind: System.DateTimeKind)
    constructor DateTime(year: i32, month: i32, day: i32, hour: i32, minute: i32, second: i32, millisecond: i32)
    constructor DateTime(year: i32, month: i32, day: i32, hour: i32, minute: i32, second: i32, millisecond: i32, kind: System.DateTimeKind)
    static method IsLeapYear(year: i32) -> bool
    static method DaysInMonth(year: i32, month: i32) -> i32
    // The same moment with another kind (the clock reading is not changed).
    static method SpecifyKind(value: System.DateTime, kind: System.DateTimeKind) -> System.DateTime
    method Add(span: System.TimeSpan) -> System.DateTime
    method AddTicks(value: i64) -> System.DateTime
    method AddDays(value: f64) -> System.DateTime
    method AddHours(value: f64) -> System.DateTime
    method AddMinutes(value: f64) -> System.DateTime
    method AddSeconds(value: f64) -> System.DateTime
    method AddMilliseconds(value: f64) -> System.DateTime
    method AddMicroseconds(value: f64) -> System.DateTime
    // `months` months later: the same day, or the month's last day when it is shorter.
    method AddMonths(months: i32) -> System.DateTime
    method AddYears(years: i32) -> System.DateTime
    // The time from `other` to this moment, and this moment `span` earlier.
    method Subtract(other: System.DateTime) -> System.TimeSpan
    method Subtract(span: System.TimeSpan) -> System.DateTime
    static operator $op_Add(d: System.DateTime, span: System.TimeSpan) -> System.DateTime
    static operator $op_Subtract(d: System.DateTime, span: System.TimeSpan) -> System.DateTime
    static operator $op_Subtract(a: System.DateTime, b: System.DateTime) -> System.TimeSpan
    static operator $op_Equal(a: System.DateTime, b: System.DateTime) -> bool
    static operator $op_NotEqual(a: System.DateTime, b: System.DateTime) -> bool
    static operator $op_Less(a: System.DateTime, b: System.DateTime) -> bool
    static operator $op_LessEqual(a: System.DateTime, b: System.DateTime) -> bool
    static operator $op_Greater(a: System.DateTime, b: System.DateTime) -> bool
    static operator $op_GreaterEqual(a: System.DateTime, b: System.DateTime) -> bool
    // The same moment (the kind is not compared).
    method Equals(other: System.DateTime) -> bool
    method Hash() -> u64
    method CompareTo(other: System.DateTime) -> i32
    static method Compare(a: System.DateTime, b: System.DateTime) -> i32
    // The moment on UTC's clock and on the local time zone's (Unspecified counts as the other one).
    method ToUniversalTime() -> System.DateTime
    method ToLocalTime() -> System.DateTime
    // Seconds and milliseconds since 1970-01-01 UTC (Unspecified counts as UTC), and the UTC moment of a count of
    // them.
    method ToUnixTimeSeconds() -> i64
    method ToUnixTimeMilliseconds() -> i64
    static method FromUnixTimeSeconds(seconds: i64) -> System.DateTime
    static method FromUnixTimeMilliseconds(milliseconds: i64) -> System.DateTime
    // `MM/dd/yyyy HH:mm:ss`.
    method ToString() -> System.String<u8>
    // As text by a format: a standard one (d, D, f, F, g, G, M, o, R, s, t, T, u, U, Y) or a custom one of
    // yyyy, yy, MMMM, MMM, MM, M, dddd, ddd, dd, d, HH, H, hh, h, mm, m, ss, s, f…, F…, tt, t, K, zzz, zz, z,
    // 'text', "text" and \x.
    method ToString(format: System.String<u8>) -> System.String<u8>
    // The moment `text` writes: ISO 8601 (`2024-05-01`, `2024-05-01T13:45:30.5Z`, `…+02:00`), the invariant
    // culture's `05/01/2024 1:45 PM`, `Wed, 01 May 2024 13:45:30 GMT`, `1 May 2024`, `May 1, 2024`, or a time
    // alone (today); a FormatError when it writes none.
    static method Parse(text: System.String<u8>) -> System.DateTime
    static method Parse(text: System.String<u8>, styles: System.DateTimeStyles) -> System.DateTime
    // The moment `text` writes in exactly `format` (a standard or custom format, as ToString takes).
    static method ParseExact(text: System.String<u8>, format: System.String<u8>) -> System.DateTime
    static method ParseExact(text: System.String<u8>, format: System.String<u8>, styles: System.DateTimeStyles) -> System.DateTime
    // The moment, or null when `text` writes none.
    static method TryParse(text: System.String<u8>) -> System.DateTime?
    static method TryParse(text: System.String<u8>, styles: System.DateTimeStyles) -> System.DateTime?
    static method TryParseExact(text: System.String<u8>, format: System.String<u8>) -> System.DateTime?
    static method TryParseExact(text: System.String<u8>, format: System.String<u8>, styles: System.DateTimeStyles) -> System.DateTime?
    // The bits (ticks and kind), and a DateTime from them.
    method ToBinary() -> i64
    static method FromBinary(bits: i64) -> System.DateTime
    static property MinValue: System.DateTime
    static property MaxValue: System.DateTime
    // 1970-01-01 00:00:00 UTC.
    static property UnixEpoch: System.DateTime
    // Now: in UTC, in the local time zone, and today's date (local, at midnight).
    static property UtcNow: System.DateTime
    static property Now: System.DateTime
    static property Today: System.DateTime
    property Ticks: i64
    property Kind: System.DateTimeKind
    property Year: i32
    property Month: i32
    property Day: i32
    property Hour: i32
    property Minute: i32
    property Second: i32
    property Millisecond: i32
    property Microsecond: i32
    property Nanosecond: i32
    property DayOfWeek: System.DayOfWeek
    // 1 for January 1st.
    property DayOfYear: i32
    // The date at midnight (same kind), and the time since midnight.
    property Date: System.DateTime
    property TimeOfDay: System.TimeSpan
}