How to fetch time in splunk logs for events with particular context

[ksuyash]

6/29/22 4:58:14.526 PM

2022-06-29 17:58:14.526 [Task1] INFO Task1 - Published Task1 received  id 101

6/29/22 4:59:14.526 PM

2022-06-29 17:58:14.526 [Task1] INFO Task1 - Published Task1 done  id 101

I'm trying  to fetch time for both the events (when it is received and when the task is done)  and calculate the difference between them in form of table 

I tried 
index=source "Published Task 1"
| rex "id" (?<ID>\d+) 
| table  ID start_time End_time difference _time

[richgalloway · Accepted solution]

What's lacking in that query are the fields other than "ID".  You can, however, use stats and eval to get them.

index=source "Published Task 1"
| rex "id" (?<ID>\d+) 
| stats min(_time) as start_time, max(_time) as End_time by ID
| eval difference_time = End_time - start_time
| table  ID start_time End_time difference_time

[ksuyash]

It was really helpful 
Thank you so much 
I'm getting time in Unix format 
1656483082.160
Any easy way to convert it