how to know if ntp deamon is start

UNIX HP-UX
1

how to know if ntp deamon is start or stop
how to determine it
by command
thanks

2

Simple:
Is it running:

 $ ps -ef|grep xntp
    root  1471     1  0  Apr 29  ?        14:33 /usr/sbin/xntpd
     vbe 17785 13294  1 15:38:01 pts/5     0:00 grep xntp