Struct Clock 

pub struct Clock {
    pub now: DateTime<Utc>,
    /* private fields */
}

“Now” plus the zone used for calendar maths.

Fields

now: DateTime<Utc>

Implementations

impl Clock

pub fn local_now() -> Clock

The real clock in the system local zone.

pub fn fixed(now: DateTime<Utc>, offset: FixedOffset) -> Clock

A fixed instant in a fixed zone (tests).

pub fn date_of(&self, t: DateTime<Utc>) -> NaiveDate

Calendar date of t in this zone.

pub fn local(&self, t: DateTime<Utc>) -> NaiveDateTime

Local wall-clock time of t in this zone.

pub fn today(&self) -> NaiveDate

pub fn start_of(&self, d: NaiveDate) -> DateTime<Utc>

UTC instant of local midnight starting d (DST gaps: earliest valid).

pub fn when(&self, t: DateTime<Utc>) -> When

Bucket of t: rolling, exclusive windows by local calendar day — today, the 6 days before (Last 7 days), the 23 before that (Last 30 days, 30 days total), everything else. Future timestamps (clock skew) count as today.

pub fn day_label(&self, d: NaiveDate) -> String

Day-header label: Today, Yesterday, Oct 21, or Oct 21 2025 when the year differs.

Trait Implementations

impl Clone for Clock

fn clone(&self) -> Clock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Clock

impl Debug for Clock

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

Formats the value using the given formatter.