htpdate

Synchronize local date and time via HTTP headers from web servers. More information: https://www.vervest.org/htp/.

• Synchronize date and time:

sudo htpdate host

• Perform simulation of synchronization, without any action:

htpdate -q host

• Compensate the systematic clock drift:

sudo htpdate -x host

• Set time immediate after the synchronization:

sudo htpdate -s host