FACT: You don't have to be that exact.
Yes, taking your pill at the same time every day can be useful so you don't forget, especially when you have an alarm clock set to remind you. But in reality, this isn't necessary. And telling women to stick to the same time every day makes it hard for them to feel they can be successful in using this method of birth control.
Here's expert advice:
*Combined Pills (estrogen and progesterone): Try to take them around the same time every day so you will not forget, but you can definitely have alternating times. *Progesterone-only Pills: These need to be taken in the same 3 hour window every day. Any longer than that and you're at increased risk of pregnancy. *Source: "Planned Parenthood: How do I use the birth control pills?"