How to set timer job interval?

Question

How can we set timer job so that it will run on specific date of month?
For example, i want schedule timer job to run on 2nd and 28th day of month.
How can we do that?

Answer 1

I'm not sure if it's possible to configure a timer job in such a way to only fire on given dates, however, you could configure your timer job to run daily but include a date check as the first action in the job.

DateTime date = DateTime.Now;

if (date.Day.Equals(2) || date.Day.Equals(28))
{
    // It's either the 2nd or 28th of the month!
    // Put the rest of the code you want to run in here.
}

else
{
    // Do nothing - it's not the 2nd or 28th.
}

Here is a good walk through if you need more information on creating the timer job, taken from MSDN.

[Edit]

In reference to your comments on this answer. See this article from the sub heading Scheduling a Job to Run Each Day.

Answer 2

There is no way to schedule timerjob by date. You should create daily timerjob and check if today is the 2nd or 28th day.