It is good, and necessary, to take time on monday afternoons to breathe and watch shit like this… to calm, to relax, and not behead one of your coworkers. 
Watch, relax, and enjoy! is about time… This video contains a collection of time lapses Simon Christen took around the San Francisco Bay Area roughly shot over the period of one year.
Find more of his work on his website simonchristen.com