How Do You Design A Timer Circuit Using 555 Timer?

The 555 timer is not very suitable for such a long time on its own. Using it with a counter it gives a precise result. If you get a data sheet it may help (first link below).

There are many websites with information about using the 555 timer. It is probably one of the most popular devices ever for hobbyists. One other idea that is very straight forward is a plug in 24 hour timer clock.

These come as either digital or mechanical designs, and plug into the power outlet. They can be programmed by user settings to turn your pump on and off at various times. The mechanical variety using settings with pins may need 15 minutes minimum between adjacent settings.

It seems unlikely you will make a suitable timer more cheaply than this unless you already have parts on hand. You have already asked this question or a variation several times. There have been good answers explaining all this by a number of people, including exactly what you asked here.

If you search for "555 timer circuits" you ... more.

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