Before the title sequence when Todd sits down with Lydia, her handbag on the table switches between sitting upright and laying down between camera shots.
Walt visits the site where he has buried his money. From then to the end of the program sometimes he is in bright sunshine and dark shadows. Sometimes the sky is overcast and the ground is dull. After Hank, Jesse and Gomez arrive, most of the close up shots of Walter show him in bright sunshine & dark shadow. The long distance shots of Hank, Jesse and Gomez show them in bright sunshine & dark shadow. However, (most of) the close up shots of Hank, Jesse and Gomez show them under a cloudy sky. There is no bright sunshine & deep shadows. Walt remains in bright sunshine & dark shadows. When Walt joins the others in close camera work they are in bright sunshine with dark shadows. See the shadow of Walt's shoulder on Hank's shirt. Jessie then appears in bright sunshine and under an overcast sky (his face is illuminated by the Sun then under an overcast sky then in bright sunshine when Walt says: "Coward." After Walt is put in the car both cars are shown in bright sunshine then under shadows. Then in bright sunshine.
Walter Jr. comments to Skyler that it's Saturday. This episode takes place on March 19, 2010, which actually fell on a Friday.