private async Task TimeUntilChristmasAsync() { DateTime christmasDateTime = new DateTime(DateTime.Now.Year, 12, 25, 0, 0, 0); DateTime currentDateTime = DateTime.Now; string tweet = string.Empty; if (currentDateTime.Date == christmasDateTime.Date) { tweet = "Today is Christmas! "; } else if (currentDateTime < christmasDateTime) { tweet = $"{CalculateTimeBetween(currentDateTime, christmasDateTime)} until Christmas. "; } if (tweet.Length > 0) { tweet += _twitterService.GetRandomChristmasHashTags(); await _twitterService.PostTweetAsync(tweet); } }