you can Windows tell to synchronise your PCs time time with an NTP time server of your choice.
For example the german “Physikalisch-Technische Bundesanstalt (PTB)”, which is the responsible authority of the DCF77 (Time) transmitter, operates three of them:
To set these server as timesource use the following command with Administrator rights:
If the the W32time service does not exists, register them
start the Time service
Continue reading Windows: Configure to use a NTP Timeserver