title: Birthday Reminder
body: <p>i have implemented a windows service which is for user's birthday reminder.
  at midnight this service sends a mail to the respective person who has birthday on that particular day. This is for users in India...</p>
  
  <p>Now my requirement is to make that service for all users in the world...
  so what should I enhance in that service...?
  Because Indian time is different than other countries timings...
  If i fire that service at mid night as per indian time..it is possible that in india midnight means different timings in other countries...
  Plz suggest me a solution.</p>