You might want to download macOS High Sierra 10.13.6 DMG for several reasons:
This sets the date to January 1st, 2018. Run the installer. Once finished, reconnect to the internet and re-sync your clock ( System Preferences > Date & Time > Set automatically ). Download Mac Os High Sierra 10.13.6 Dmg
Type Y to confirm erasing the USB drive. You might want to download macOS High Sierra 10