Convert Datetime Value to String Comparing to Current Time & Specify Duration

This code snippet is for Convert Datetime Value to String comparing to current Time & specify duration.

When you read a value from database that has a timestamp. lets say 2016/29/12T08:00 - when you execute the code now i.e. 10PM - the output expect as "12 hours ago".

Where the time will specify the exact duration of value fetched from current time.

public static string ToRelativeDate(this DateTime dateTime)
                {
                        var timeSpan = DateTime.Now - dateTime;

                        if (timeSpan <= TimeSpan.FromSeconds(60))
                                return string.Format("{0} seconds ago", timeSpan.Seconds);

                        if (timeSpan <= TimeSpan.FromMinutes(60))
                                return timeSpan.Minutes > 1 ? String.Format("about {0} minutes ago", timeSpan.Minutes) : "about a minute ago";

                        if (timeSpan <= TimeSpan.FromHours(24))
                                return timeSpan.Hours > 1 ? String.Format("about {0} hours ago", timeSpan.Hours) : "about an hour ago";

                        if (timeSpan <= TimeSpan.FromDays(30))
                                return timeSpan.Days > 1 ? String.Format("about {0} days ago", timeSpan.Days) : "yesterday";

                        if (timeSpan <= TimeSpan.FromDays(365))
                                return timeSpan.Days > 30 ? String.Format("about {0} months ago", timeSpan.Days / 30) : "about a month ago";

                        return timeSpan.Days > 365 ? String.Format("about {0} years ago", timeSpan.Days / 365) : "about a year ago";
                }