How do I set the time on my rtc ds3231?

Projects General Guidance
1

My clock says that the time is Monday, January 1, 2000, at 2:18. How can I correct it to the present time?

2

http://bildr.org/2011/03/ds1307-arduino/

works with DS3231. If you just want to tell the time, and perhaps get some simple triggers, you don't need anything else.

3

Will you be using the Time library?
Will you have a means of refreshing the time periodically? GPS, NTP, et cetera?

4

Not much need for that if using a DS3231.

5

fylkir:
My clock says that the time is Monday, January 1, 2000, at 2:18. How can I correct it to the present time?

See if this works for you:
https://github.com/millerlp/RTClib/blob/master/examples/settime_exact/settime_exact.ino

6

odometer:
Not much need for that if using a DS3231.

Indeed, and, if you have NTP etc., there may not be much need for a DS3231.