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Calculate the number of seconds elapsed since the start of the day
Source position: dateutil.inc line 226
function SecondOfTheDay( 
const AValue: TDateTime 
):LongWord; 
AValue 

Moment in the day 
Number of seconds elapsed since the start of the day
SecondOfTheDay returns the number of seconds that have passed since the start of the Day (00:00:00) till the moment indicated by AValue. This is a zerobased number, i.e. 00:00:00.999 return 0.
For an example, see the HourOfTheDay function.

Calculate the number of seconds elapsed since the start of the year. 


Calculate number of seconds elapsed since the start of the month. 


Calculate the number of seconds elapsed since the start of the week 


Calculate the number of seconds elapsed since the start of the hour 


Calculate the number of seconds elapsed since the start of the minute 


Calculate the hour of a given TDateTime value 


Calculate the number of minutes elapsed since the start of the day 


Calculate the number of milliseconds elapsed since the start of the day 