Daylight Saving Time and Your Birth Control Pill

For maximum pregnancy prevention, you should take the pill at about the same time each day. This ensures that your body has enough hormones to stop you from ovulating, whether you’re taking progestin-only or a combination pill.

You may have been told that it may become less effective if you forget to take your medicine or take it earlier and later than usual. So when it comes to daylight saving time, you may want to know your birth control time.

This article discusses whether daylight saving time affects when you should take birth control pills and how you should adjust.

spring forward

Most medical professionals agree that you have 1 to 2 hours to take the pill without affecting its effectiveness. That means if you use it an hour early or an hour later, it should still work fine.

Suppose you always take your medicine at 10 pm. When daylight saving time is in effect, the clock “jumps forward” one hour. When the clock reads 10 pm, you can still take the pill, even if it has been less than 24 hours since the last pill. You don’t necessarily need to adjust for daylight saving time.

If you want to be very cautious, you can adjust the timing of your medication at any time.This means that when daylight saving time starts, you will switch from 10pm to 11pm

Really want to keep your “normal” time? After taking the placebo for a week, start with a new packet and go back to taking it at the “normal” time. In the example above, you can use them again at 10pm.


Ideally, you should take the pill within the same hour to two hours each day. When turning the clock forward in the spring, you can do it at the same time or an hour later as usual.

fall back

When daylight saving time ends, the clocks will move back one hour. In this case, it is best to take the medicine an hour earlier than usual. This helps ensure that your hormone levels don’t drop too much.

After the placebo week, you can always retake the pill at the “regular” time. When you start taking your next pack of pills, resume your usual time.

Taking your medicine an hour earlier or later usually doesn’t matter. However, taking your medication an hour earlier (rather than an hour later) is a better option.

Also, keep in mind that computer software programs and smartphones often (but not always) update the time automatically.

You may rely on reminder emails/text messages, phone alerts, or birth control apps to remind you to take your medication. If so, make sure your device has adjusted for the start or end of daylight saving time.

Is Daylight Saving Time Bad for Your Health?


Daylight saving time has been used in the United States and many European countries since the First World War. During DST, you advance your clocks by one hour during the spring/summer months. This allows the day to last an extra hour when people are usually awake.

A place that observes daylight saving time will move clocks forward one hour at the start of spring and adjust it back to standard time in fall. When referring to this, you’ll see the terms “jump forward” and “backward”.

The United States did not officially adopt daylight saving time until 1918. On March 19, 1918, an official act was enacted to preserve daylight and provide standard time for the United States.

After the end of the First World War, the Act was less popular. President Wilson ended the bill but allowed each state to decide whether to observe daylight saving time. They can also decide when to start and end. This created a lot of confusion.

To create a pattern across the country, President Lyndon Johnson signed the Uniform Time Act of 1966. The Act was passed into law on April 13, 1966. It established a uniform time to observe daylight saving time while allowing states to pass state laws.


Daylight saving time began in the United States in 1918 and became law through the Uniform Time Act of 1966. The goal is to add an hour of daylight to your waking hours in the spring and summer. States can exempt Daylight Saving Time if they pass state laws.

when it happens

Daylight saving time begins at 2 a.m. on the second Sunday in March in most parts of the United States. They go back to standard time on the first Sunday in November.

In the spring, the clock “jumps forward” from 1:59 a.m. to 3 a.m. In the fall, the clock “falls back” from 1:59 a.m. to 1:00 a.m. Each time zone in the United States switches at a different time.

The following states and U.S. territories do not observe daylight saving time:

  • Arizona
  • hawaii
  • American Samoa
  • Guam
  • Puerto Rico
  • The Virgin Islands
  • Commonwealth of the Northern Mariana Islands

The beginning and end of daylight saving time can be confusing at times. It can cause problems when traveling, sleeping, or taking medications such as pills.


Taking birth control pills at about the same time each day may be most effective. During daylight saving time, your clock changes by an hour, so you may take your birth control pill earlier or later.

Most medical experts say that you should take the medication for one to two hours a day. So if you take it an hour earlier or later, the pill should still work fine.

If you want to be a little more cautious, you can take the medicine when you “jump forward” after an hour. When you “fall back”, you can also advance an hour.

Whatever time you decide, you can go back to your usual time after taking the placebo for a week and start taking the new pills.

VigorTip words

When it comes to daylight saving time, you don’t need to worry too much about adjusting when you’re taking your medication. As long as you’re still on the pill within an hour of normal circumstances, don’t worry!

As long as you take your birth control pill at about the same time each day, you’ll be most protected.

Other health benefits of birth control pills

Frequently Asked Questions

  • Why take medicine at the same time every day?

    The hormones in birth control pills prevent you from ovulating. Your body metabolizes the hormones in the pills every day. If hormone levels drop and a new dose is not given (via the next pill), you may start ovulating again. This is especially true for progestin-only pills. If you take these pills for more than 24 hours, you may reduce the effectiveness of the pills.

    understand more:

    What You Should Know About Progesterone-Only Pills

  • How does changing the time zone affect birth control pills?

    For the pill to be effective, it should be taken at the same time each day. So if you regularly shoot at 10:00AM ET, you need to shoot at 7:00AM PT.

    understand more:

    How to adapt to the new time zone

  • What happens if you take your birth control pill a few hours later than normal?

    Hormone levels in the body can drop if birth control pills are taken too late. To prevent pregnancy, it is necessary to take the missed dose as soon as possible and then take the next pill at a regularly scheduled time (this may mean taking two pills within 24 hours).

    understand more:

    What is a natural form of birth control