How do I upload my calendar on iphone to gmail/yahoomail?

[Antmf]

I dont see and option in itunes for calendar syncing to google or yahoo like it offers for contacts. HOw do I do this? Thanks...

[Hawk]

There are 2 ways to sync google calendars.
1) get the sync tool for your desktop PC that syncs outlooks with google. You sync your phone to the PC, PC syncs to Google on the web.
2)you can setup active sync with Google. Open your calendar in google and go to help. There should be instructions there to setup your calendar for Push service so it's instantaneously synced between your phone and Google.

[willyneuhaus]

A good tutorial can be found here (http://www.google.com/support/mobile/bin/answer.py?answer=138740&topic=14252)

Willy