ToString end var aDateTime : TDateTime begin aDateTime := now WriteLn ( 'Date: ' + FormatDateTime ( 'yyyy-mm-dd', aDateTime )) // WriteLn ( 'Combined date and time in UTC: ' ) WriteLn ( ' ' + ISO8601_Combined_date_and_time_in_UTC ( aDateTime, '+00:00' )) // T12:18:47+00:00 WriteLn ( ' ' + FormatDateTime ( 'yyyymmdd"T"hhmmss', aDateTime ) + 'Z' ) // 20180926T121847Z Writeln ( ' ' + ISO8601_Combined_date_and_time_in_UTC ( aDateTime, 'Z' )) // WriteLn ( 'Week: ' + ISO8601_week ( aDateTime ) ) // 2018-W39 WriteLn ( 'Date with week number: ' + ISO8601_Date_with_week_number ( aDateTime )) // 2018-W39-3 WriteLn ( 'Ordinal date: ' + ISO8601_Ordinal_date ( aDateTime )) // 2018-269 ReadLn end. 2018-269 function ISO8601_Ordinal_date ( a_DateTime : TDateTime ) : string begin result := FormatDateTime ( 'yyyy', a_DateTime ) + '-' + ( DayOfTheYear ( a_DateTime )). ToString + '-' + ( DayOfTheWeek ( a_DateTime )). procedure CopyFrom(DataSet: TDataSet FileName: string DateTimeAsString. 2018-W39-3 function ISO8601_Date_with_week_number ( a_DateTime : TDateTime ) : string begin result := FormatDateTime ( 'yyyy', a_DateTime ) + '-W' + ( WeekOf ( a_DateTime )). Contribute to newpascal/freepascal development by creating an account on. The complete list of formatting characters can be found in formatchars. Declaration Source position: datih.inc line 157 Description FormatDateTime formats the date and time encoded in DateTime according to the formatting given in FormatStr. ToString end // Date with week number: e.g. FormatDateTime Return a string representation of a TDateTime value with a given format. 2018-W39 function ISO8601_week ( a_DateTime : TDateTime ) : string begin result := FormatDateTime ( 'yyyy', a_DateTime ) + '-W' + ( WeekOf ( a_DateTime )). This formatting is best explained by the example code. The Formatting string can comprise a mix of ordinary characters (that are passed unchanged to the result string), and data formatting characters. Formatting is defined by the Formatting string. Program iso_8601_project Uses SysUtils, DateUtils // Combined date and time in UTC e.g // function ISO8601_Combined_date_and_time_in_UTC ( a_DateTime : TDateTime a_Time_zone : string ) : string begin result := FormatDateTime ( 'yyyy-mm-dd"T"hh:mm:ss', a_DateTime ) + a_Time_zone end // Week: e.g. The FormatDateTime function provides rich formatting of a TDateTime value DateTime into a string. Gives the week of the year for a TDateTime value Gives a string representation of a TDateTime value with a given format Gives the day of the year for a TDateTime value Gives day of week index for a TDateTime value Gives day of month index for a TDateTime value The time zone can be indicated by marking the time difference between the coordinated universal time (UTC) as follows: The combined date and time should be marked with the letter "T":īut often the intermediate letter "T" can be replaced by a space. The SS is seconds from the beginning of the previous minute between 00 and 59. The MM is minutes from the beginning of the previous hour between 00 and 59. The SS is seconds from the beginning of the previous minute between 00 and 59. The time is recorded: HH:MM:SS where HH has hours after midnight between 00 and 23. Where HH has hours after midnight between 00 and 23. Where YYYY is a year in the Gregorian calendar, MM is a month between 01 (January) and 12 (December), and DD is the day of the month between 01 and 31. ISO 8601 is a standard issued by the International Organization for Standardization (ISO) for the date and time.Īccording to ISO 8601, the date is as follows: Warren Hill on How to create forms at run tim… Can not load default Firebird clients ("libfbembed.so" or "libgds.so").Lazarus Web development: FreeSpider Apache Module.How to write into a text file in free pascal.How to call procedure/function by reference in Free Pascal.How to download files from database using Free Pascal/Lazarus Could you not just subtract one from the other (assuming the Time part was zeroed) Ken Pemberton.How to upload files into database using Free Pascal/Lazarus.How to write Linux service application using FreePascal/Lazarus.FreePascal/Lazarus book: Start programming using Object Pascal.Program tp4 Type dt Record jour : Integer mois : Integer annee : Integer End Var date : dt y,x,i,s : Integer Begin x : 0 s : 0 For y:1 To 2 Do //2 dates Begin Writeln ('Entrez un. It keeps returning a big number - please help. How to create forms at run time in Free Pascal/Lazarus This program is supposed to find the difference between two dates but it has a bug and I can't find it.
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