You may be photographing in broad daylight or in the middle of the night and it is no concern at all. However when you are developing a film or printing the negatives, one always needs a darkroom and the overall important darkroom equipment for processing your creative photographs into reality. The equipment required for film processing is of diverse variety and you really need a nice square room to house all of these in an organized manner.
What is required?
Before we discuss the most important pieces of equipment let us list them together:
Books on photography
Film processing tanks of various types
Film Reels
Darkroom chemicals for film processing like developers, fixers, printing chemicals, stop bath chemicals etc
Chemical storage and jugs
Miscellaneous chemicals and darkroom equipment like fixer test solution, hypo clearing agent, wetting agent, changing plastic bags, safe lights, timers, and trays
Printing ancillaries like lint free cotton gloves, glass rods for stirring, printing scale wedges, dodging and burning equipment for color finishing of photographs, exposure meters or timers, funnels, safety...