You can easily set it up to update the time in intervals from every hour up to every month. If you connect to Internet by Dial-up, you can set it up to not update the time when Dial-up connection is not established, or wait until Dial-up connection established and then update the time.
Advanced Time Synchronizer supports three time protocols: Simple Network Time Protocol (SNTP), Time Protocol and Daytime Protocol. If you are using a proxy server, you can configure Advanced Time Synchronizer to update the time via HTTP, SOCKS4, SOCKS4A or SOCKS5 proxy server.