Google Calendar is a calendar that can be used and viewed online.
every week everything is updated.
From the Google calendar's Settings there is a link to Delete your calendar.
New Google Earth satellite imagery is added approximately every 2 weeks or a twice a month. Street View imagery is updated on its own schedule. The same imagery that is added for Google Earth is available to Google Maps as well.
Google Calendar was created on 2006-04-13.
Yes. Google calendar is free to use.
In the Google Calendar and Google Mail "settings" category.
You can add your schedules, tasks, everything. You can sync google calendar with iPhone, outlook calendar. One example here: http://mashtips.com/how-to-setup-google-calendar-on-iphone-ipod/
The images in Google Earth (and Google Maps) are updated on a continuous basis. It's hard to say exactly when an area will be updated because some areas may be updated more frequently than others. Google provides KML feeds showing what areas have been updated in a given update. Google also provides a notification service you can signup to alert you when a given area is updated. For details see the related question.
Screen calendar, http://www.screencalendar.com/.
It could be because Google Calendar (or equivalent) isn't downloaded. You can download a calendar of your choice from the Google Play store.
Yes, Google Chrome has updated over time very much. Numerous features are being added into it.