NTP.DEREKGORDON.COM time server pool is STILL functional and highly utilized!
This pool provides you with top-notch time servers in your region.
Important - the A-GPS data supplied by me is no longer available. The usage has been extremely low recently and dropped exponentially over the past several years and did not warrant continued investment. Should your GPS not work with basic configuration changes and using the above NTP server, consider a new phone. I recommend the Pixel line if you can splurge.