get utc time in flutter code example

Example: flutter utc time to days ago

String convertToAgo(DateTime input){
  Duration diff = DateTime.now().difference(input);
  
  if(diff.inDays >= 1){
    return '${diff.inDays} day(s) ago';
  } else if(diff.inHours >= 1){
    return '${diff.inHours} hour(s) ago';
  } else if(diff.inMinutes >= 1){
    return '${diff.inMinutes} minute(s) ago';
  } else if (diff.inSeconds >= 1){
    return '${diff.inSeconds} second(s) ago';
  } else {
    return 'just now';
  }
}


DateTime time1 = DateTime.parse("2020-07-20 20:18:04Z"); 
print(convertToAgo(time1));
  
DateTime time2 = DateTime.utc(2020, 11, 9);
print(convertToAgo(time2));