If even one of the three is missing, you can't really call it the perfect alignment.
Tips
history
From 《孟子·公孙丑下》: "天时不如地利，地利不如人和" — the right timing matters less than terrain, and terrain matters less than human unity. Mencius argued that human harmony outweighs the other two. Sun Bin's 《孙膑兵法·月战》 treats all three as prerequisites for victory.
usage
Classically a six-character phrase (三才 concept), used for military, business, and political success. Often introduced by 占尽 (to have all of) or 可谓 (one can say). Mencius's ordering implies 人和 is the most decisive.
