SQLite Datetime before 24 hours query

I have a database table and storing a datetime column with the UTC datetime, iOS [NSDate date] is returning always a UTC datetime. It's all good about it.

I'm using FMDB to get the last 12 and 24 hours data with the following code.

[self.fmQueue inDatabase:^(FMDatabase *db)
   {
   NSString* queryCommand = [NSString stringWithFormat:@"SELECT * FROM %@ WHERE %@ >= Datetime('?')", readingsTable, dateTimeRecordedColumn];
   NSDate* dateBefore24Hours = [self.dateUtilities dateBySubtractingDays:1 forDate:[NSDate date]];
   WEELogDebug(@"Date before 24 hours: %@", dateBefore24Hours);
   FMResultSet* result = [db executeQuery:queryCommand, dateBefore24Hours];
   if (completionblock)
      {
      completionblock([self readingsArrayFromResultSet:result]);
      }
   }];

What I need to accomplish is retrieve all data that has a date after the dateBefore24Hours variable. The debug message shows the correct value, for example [NSDate date] now before 24 hours is, Date before 24 hours: 2015-04-06 15:28:08 +0000, so I should get al the records until 2015-04-07 15:28:08 +0000 with the above query, but I don't.

With SQLite Studio I provide you with the records I have at the moment in the database.