Hi @beepbop,
what do you mean with "scheduled index time", are you speaking of the timestamp (that's recorded in the _time field)?
If this is your requirement, you can use the timestamp recorded in the event or the timestamp of when the event is indexed.
If you want the event timestamp, Splunk tries to recognize the timestamp, otherwise (e.g. when there are more timestamps in the event) you have to teach Splunk to identify the timestamp using two parameters in props.conf (TIME_PREFIX and TIME_FORMAT).
If there isn't any timestamp in the event you can use the timestamp of when the event is indexed or the timestamp of the previous indexed timestamp (default).
Ciao.
Giuseppe
