Calculate time until Weekday

Question

How could calculate the time until the daytime of the next weekday?
More specifically I want to calculate the minutes, hours, and days until the next Wednesday at 14:00.

How could I do that?

Possible duplicate of [Days, hours, minutes, seconds between two dates](http://stackoverflow.com/questions/10538507/days-hours-minutes-seconds-between-two-dates) — MakePeaceGreatAgain, Nov 18 '15 at 07:55
What did you try? Do you know how to get the current day and time? Subtract other values? Do you know how to get the next Wednesday? — nvoigt, Nov 18 '15 at 07:55
You can get answer @ http://stackoverflow.com/questions/11/how-do-i-calculate-relative-time?rq=1 — Avinash Jain, Nov 18 '15 at 07:59
If today is *Wed 11:00* what is the right answer? *3 hours* or *7 days 3 hours*? What's the right answer for `Wed 15:00`? — Dmitry Bychenko, Nov 18 '15 at 08:03
I don´t see why upvoting this question that shows no own appraoches at all. — MakePeaceGreatAgain, Nov 18 '15 at 08:47

Soner Gönül · Accepted Answer · 2015-11-18T08:20:02.707

Feel like taking risk to answer that but..

How could calculate the time until the daytime of the next weekday?

If you mean Wednesday with this sentence, you can iterate current date to next Wednesday with DayOfWeek enumeration like;

DateTime today = DateTime.Today;
while (today.DayOfWeek != DayOfWeek.Wednesday)
{
    today = today.AddDays(1);
}

Since I'm in İstanbul right now -today is Wednesday- and this code returns today, not 7 days after.

More specifically I want to calculate the minutes, hours, and days until the next Wednesday at 14:00.

Then you can add 14 hour to today and get difference between current local time (DateTime.Now) with it.

today = today.AddHours(14);
TimeSpan difference = DateTime.Now - today;
Console.WriteLine(difference.ToString("d\\.hh\\:mm"));

By the way, this TimeSpan.ToString(string) overload added with .NET Framework 4.0 version. If you use .NET 3.5 or below, you can use Days, Hours or Minutes properties (or maybe TotalXXX properties) of your difference.

Christos · Answer 2 · 2015-11-18T08:03:40.387

That you need is a TimeSpan object:

TimeSpan duration = nextWednesday  - currentDate;

where nextDay and nextWednesday are two DateTime objects representing the dates you are interested in.

For instance, currentDate could be this DateTime.Now. For nextWednesday you need something more:

var today = DateTime.Today;
var daysUntilWednesday = ((int) DayOfWeek.Wednesday - (int) today.DayOfWeek + 7) % 7;
var nextWednesday = today.AddDays(daysUntilWednesday);
var ts = new TimeSpan(14,0,0);
nextWednesday = nextWednesday.Date + ts;

Having done that, you can use the properties of TimeSpan object to get that you want.

score 1 · Answer 3 · answered Nov 18 '15 at 07:57

You can try using TimeSpan

DateTime t1 = ......;
DateTime t2 = ......;
TimeSpan ts = t1.Subtract(t2);

A TimeSpan object represents a time interval (duration of time or elapsed time) that is measured as a positive or negative number of days, hours, minutes, seconds, and fractions of a second. The TimeSpan structure can also be used to represent the time of day, but only if the time is unrelated to a particular date.

Calculate time until Weekday

3 Answers3