swift - NSFetchRequest by date -

i have method below pass nsdate() results today. i've trying results midnight midnight doesnt seem work. i've noticed predicate outputs this:

"date >= cast(460249200.000000, "nsdate") , date <= cast(460289100.000000, "nsdate")" presumed 460249200.000000 unix timestamp if @ day correct year 1984?

func getall(dayofrecords: nsdate) -> nsarray {       var calendar = nscalendar.currentcalendar()     var components = calendar.components(.calendarunitmonth | .calendarunitday | .calendarunityear, fromdate: dayofrecords);     var midnightcomponents = nsdatecomponents();     midnightcomponents.day = components.day;     midnightcomponents.month = components.month;     midnightcomponents.year = 2015;     midnightcomponents.hour = 0;      var midnightdate = calendar.datefromcomponents(midnightcomponents);      var twentyfourhourslater = nsdatecomponents();     twentyfourhourslater.day = components.day;     twentyfourhourslater.month = components.month;     twentyfourhourslater.year = 2015;     twentyfourhourslater.hour = 11;     twentyfourhourslater.minute = 59;      var twentyfourhoursahead = calendar.datefromcomponents(twentyfourhourslater);       var predicate = nspredicate(format: "(date >= %@) , (date <= %@)", midnightdate!, twentyfourhoursahead!);     var fetchrequest = nsfetchrequest(entityname: "movement")     //filter seems 1987!!!??? fetchrequest.predicate = predicate;     fetchrequest.predicate = predicate;     var results:nsarray = managedobjectcontext!.executefetchrequest(fetchrequest, error: nil)!      return results; } 

for date properties, core data stores number of seconds since 1 january 2001, gmt in sqlite database, i.e. nsdate property timeintervalsincereferencedate returns.

with

let date = nsdate(timeintervalsincereferencedate: 460249200.0) 

you can verify first timestamp in sqlite query 2015-08-02 23:00:00 +0000, 2015-08-03 00:00:00 in gmt+1 time zone.

so start date correctly set midnight on august 3. end date set same day @ 11:59, (approximately) noon , not 24 hours later. may want set 23:59, or better 00:00 @ following day.

this can simplified to

let calendar = nscalendar.currentcalendar() let startdate = calendar.startofdayfordate(dayofrecords) let enddate = calendar.datebyaddingunit(.calendarunitday, value: 1, todate: startdate, options: nil)!  let predicate = nspredicate(format: "(date >= %@) , (date < %@)", startdate, enddate);