http://www.nrc-cnrc.gc.ca/eng/services/time/network_time.html
gc.ca has changed their time server address.
time4.nrc.ca
NOTE: these will no longer work
- time.nrc.ca
- time.chu.nrc.ca
OR you can always use the NTP pools:
- pool.ntp.org
- 1.ca.pool.ntp.org