Calendar Events More than 60 Days Away Not Synching

Is there a certain time limitation to calendar events created in SuiteCRM being synchronized or pushed onto the iCal calendar? I am having an issue where any calendar events in SuiteCRM more than 60 days away are not appearing in my other calendars synched to read my SuiteCRM calendar through iCal. For reference I am using Thunderbird calendar to sync a read-only iCal with SuiteCRM and I am able to view test events (meeting) on dates: February 5, 19, and March 31. But I am unable to view calendar events on dates: April 14 and May 13.

Any guidance would be appreciated. Thanks, SR.

Pinging this in hopes somebody can detail any calendar sync limitations or next steps.

thanks!