Here are two great ical subscription calendars useful for location photographers.
sunrise sunset calendar this site also has a weather calendar.
weather calendar from Wunderground.com. Finding the ical link is not obvious. You will need to first search for your weather location and then find the drop down sharing button at top right.
Control click ‘Download ical’ to copy link, then paste this into ical under the New Calendar Subscription: ical> File> New Calendar Subscription.
You can show or hide these calendars as and when you need them.