1) Enable template module caching.

2) Create a template module for the contents of each of those templates you listed above.

3) Set the expiration time on the first to 1 hour, set it to 1 day on the RSS 2 module.

4) Change the content of the RSS index templates to have a single statement <mt:Include module="MODULE_NAME">

Thanks for your reply.

As per your suggestion I implemented the 'scheduled publishing recursively on different interval' using 'template module caching'. But there seems to be one issue in this approach.

Point 1: MT is able to cache the index template(s) - which means it does not publish the 'Index Template' until the expiry of the 'Template Module' included in it.

Point 2: MT also does not publish the 'Index Template' BY ITSELF after the expiry of the 'Template Module' included in it. - you need some trigger point which publishes index templates like [write an entry] / [set up a cron job via publish Q] / [manually publish]

Point 3: Consider a usecase -
A) The expiry time for 'Template Module' is set to 5 mins which is included in an Index Template 'RSS'.
B) At 12:10pm all index templates were published including RSS - so all files are up to date
C) Editor logs in and publishes a new entry at 12:11pm - this will publish all index templates EXCEPT RSS
D) RSS is not published because it was cached at 12:10pm and will not publish until 12:15pm

E) At 12:15pm, I have nothing to publish which means the newly published Entry will never appear in my RSS until somebody publishes the index template after 12:15 ? Am I correct ?

Is there a solution to it ? (I can set a cron job at minimum time possible)

Also I have another finding, can you please confirm on it: When you use the Publish feature of MT it will publish only those templates whose output have some update. If there is no change in the final output file - it wont publish it ?

Thanks,
Ashish

mt_rebuild seems to be the right candidate for this kind of requirement.