sntp binary package in Ubuntu Focal riscv64

 NTP, the Network Time Protocol, is used to keep computer clocks
 accurate by synchronizing them over the Internet or a local network,
 or by following an accurate hardware receiver that interprets GPS,
 DCF-77, NIST or similar time signals.
 .
 sntp can be used as an SNTP client to query a NTP or SNTP server and
 either display the time or set the local system's time. It is not
 sufficient, however, for maintaining an accurate clock in the long run.

Source package