To format your Time There is no need to Import whole Intl library, Just use this small Script, It has Months names, And add 0 if DateTime.now() returns single Digit

time.dart

// Test Code 
// https://dartpad.dev/?id=b0c38822400ec328d396cba8e5f966bc


void main() {
  mytime() {
    var now = DateTime.now();
    var monthList = [
      // Added 1st month Null because of Range Error
      'Null',
      'Jan',
      'Feb',
      'Mar',
      'Apr',
      'May',
      'Jun',
      'Jul',
      'Aug',
      'Sep',
      'Oct',
      'Nov',
      'Dec'
    ];
    var c = [now.year,now.month,now.day,now.hour,now.minute,now.second];
    var d =[];
    // To add zero to single Digit
    for (int i = 0; i < c.length; i++) {
      if (c[i] < 10) {
        d.add('0'+c[i].toString());
      }else{
        d.add(c[i]);
      }
    }
    
    // Return format as you wish accordingly c[] values
    // For months if you want return in digits then no need to use monthList
    return ('''
  ${d[3]}:${d[4]}:${d[5]}  ${d[2]}-${monthList[now.month]}-${d[0]}
    ''');
  }

  print(mytime());
}