Is ntpdate_flags been replaced by ntpd_sync_on_start?

So doing some updating on my machines. The current setup I have been reading now says to use ntpd_sync_on_start="YES" in rc.conf. Which what I thought ntpflags -b did. Has one become obsolete?
 
ntpd_sync_on_start="YES" is more like "-g" flag.
I appreciate your response. Can you help with just a bit more information. Because I don't see a -g switch in the man ntpdate file. Could you direct me to more information on that? Thanks in advance.
 
ntpd(8) and ntpdate(8) are two different programs. ntpdate is planned to be removed at some point, which is why rc.conf(5) suggests using ntpd_sync_on_start rather than enabling ntpdate.

You can also find this info in 2.8.3 Enabling Services of the FreeBSD Handbook:
  • ntpdate - Enable the automatic clock synchronization at boot time. The functionality of this program is now available in the ntpd(8) daemon. After a suitable period of mourning, the ntpdate(8) utility will be retired.
  • ntpd - The Network Time Protocol (NTP) daemon for automatic clock synchronization. Enable this service if there is a Windows®, Kerberos, or LDAP server on the network.
That seems to be the last mention of ntpdate configuration in the Handbook as 30.11.1 NTP Configuration doesn't even mention ntpdate.
 
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