delay need help

My LED must burn 60 seconds. One second is named with 1000 milli seconds, i thougt the value for 60 seconds must be now 60000. But it burn much longer than one minute. can you help me?

60000 is not representable in 16 bit "int" arithmetic, but we'd need to see your code.

Use unsigned long variables for anything to do with millis()


unsigned int, 0 to 65535, used in delay()
unsigned long, 0 to 0xFFFFFFFF, used with millis() and micros()