FreeCountdownTimer (by hristoforos)

It's great to be able to fully concentrate on the task at hand while waiting for a future task to be ready for action. Free Countdown Timer can remind you about important events by playing your favorite music (you can set volume to a predefined level) and showing a notification message. Timers that you set will sound even if computer goes to sleep. You can set the time in hours, minutes, seconds and an alarm will ring the counter reaches zero; or you can set date and time and an alarm will ring the counter reaches this time. Free Countdown Timer supports unlimited number of timers so that you are not restricted to the number of alarms you can have. Here are some events for countdown timer: New Year, Christmas, Halloween, Vacation, Birthday, Graduation, Wedding, Pregnancy, etc.

i have put image instructions for you all.
this free version does everything a user actually needs.all the basic things that you might need.