[oracle@RAC1 grid]$ ./runcluvfy.sh stage -post crsinst -n RAC1,RAC2 -verbose

Checking if Clusterware is installed on all nodes...
Check of Clusterware install passed

Checking if CTSS Resource is running on all nodes...
Check: CTSS Resource running on all nodes
  Node Name                             Status                  
  ------------------------------------  ------------------------
  RAC2                                  passed                  
  RAC1                                  passed                  
Result: CTSS resource check passed


Querying CTSS for time offset on all nodes...
Result: Query of CTSS for time offset passed

Check CTSS state started...
Check: CTSS state
  Node Name                             State                   
  ------------------------------------  ------------------------
  RAC2                                  Active                  
  RAC1                                  Active                  
CTSS is in Active state. Proceeding with check of clock time offsets on all nodes...
Reference Time Offset Limit: 1000.0 msecs
Check: Reference Time Offset
  Node Name     Time Offset               Status                  
  ------------  ------------------------  ------------------------
  RAC2          -4700.0                   failed                  
  RAC1          0.0                       passed                  
Result: PRVF-9661 : Time offset is NOT within the specified limits on the following nodes: 
"[RAC2]" 

PRVF-9652 : Cluster Time Synchronization Services check failed

Post-check for cluster services setup was unsuccessful on all the nodes. 
[oracle@RAC1 grid]$ 

[oracle@RAC1 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): 0
[oracle@RAC1 ~]$ 

and on RAC2

[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -4700
[oracle@RAC2 ~]$ 

oracle@RAC1 ~]$ 
[oracle@RAC1 ~]$ cluvfy comp clocksync -n all

Verifying Clock Synchronization across the cluster nodes 

Checking if Clusterware is installed on all nodes...
Check of Clusterware install passed

Checking if CTSS Resource is running on all nodes...
CTSS resource check passed


Querying CTSS for time offset on all nodes...
Query of CTSS for time offset passed

Check CTSS state started...
CTSS is in Active state. Proceeding with check of clock time offsets on all nodes...
Check of clock time offsets passed


Oracle Cluster Time Synchronization Services check passed

Verification of Clock Synchronization across the cluster nodes was successful. 
[oracle@RAC1 ~]$ 
[oracle@RAC1 ~]$ 
[oracle@RAC1 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): 0
[oracle@RAC1 ~]$ 
[oracle@RAC1 ~]$ 


and on RAC2 is was 


[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -800
[oracle@RAC2 ~]$ 
[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -800
[oracle@RAC2 ~]$ 
[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -900
[oracle@RAC2 ~]$ 
[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -900
[oracle@RAC2 ~]$ 
[oracle@RAC2 ~]$ crsctl check ctss
CRS-4701: The Cluster Time Synchronization Service is in Active mode.
CRS-4702: Offset (in msec): -1000
[oracle@RAC2 ~]$