[Windows] Check your computer time

http://time.is/

Amazingly, my Win7 PC was 8 seconds behind.  Windows' default time sync frequency is 7 days.  Here is how to change the frequency:

1. RedEdit this --> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\w32Time\TimeProviders\NtpClient
2. Click on "SpecialPollInterval" and modify.
3. Change to "Decimal".  Default is 604800 seconds.
4. I changed this to 28800 (8 hours).