No. This is a myth. ESET uses network time synchronization. If you change your PC’s date, ESET will simply refuse to connect to its update servers. You will lose virus definition updates, making the software useless.

No permanent cracks exist for recent versions (v15, v16, v17). Any file claiming to be an "ESET Internet Security crack" is 99.9% malware. The remaining 0.1% will be detected and quarantined within hours.

Avoid these entirely unless in an isolated VM for testing.