If you're looking to get into Landsat imagery yourself, I highly recommend the command line tool landsat-util[1] (although you do need to install it using Python 2). It allows you to search with lat/lon pairs, cloud cover, etc, and comes with tools to automatically do the band combining for you so you can have easy real-color images. I find the the browser-friendly tools like LandsatLook[2] or Earth Explorer[3] to be…
A little off topic but are you aware of anywhere that provides high resolution night-time imagery? So far I've only been able to find a little from Himawari-8.
https://ngdc.noaa.gov/eog/download.html
The Visible Infrared Imaging Radiometer Suite Day-Night Band (VIIRS DNB) images the entire Earth nightly at a resolution of about 750 meters. Suomi NPP orbits the Earth 14 times per day on a 16-day repeat cycle. The average time at which images are taken is near 01:30 in local solar time, but can vary by over an hour depending on latitude and the particular cycle.