A set of twins born in California over New Year's were born in different years - one was born in 2017, the other was born in 2018!
Maria Flores, from California in the US, was due to give birth to her twin babies on 27 January, but the babies surprised her and arrived four weeks early.
But that wasn't the biggest surprise of their arrival - as one was born on New Year's Eve, and the other was born on New Year's Day!
GALLERY: The top 12 most weird and wonderful techniques to get pregnant by wannabe mums
The top 12 most weird and wonderful techniques to get pregnant by wannabe mums - slider
1 - Wear socks during sex and for the week after to keep your feet warm
2 - Eat McDonalds chips immediately after sex
3 - Eat dark chocolate every day
4 - Avoid having an orgasm for a week after sex
6 - Eat pineapples and drink pineapple juice
5 - Use reverse psychology and tell yourself you don’t want a baby, then have a wild night out and forget about ‘trying’
8 - Pierce your nose on the left side
7 - Wear green and use green bedsheets
9 - Don’t just put your legs in the air but ‘bicycle’ them for at least three minutes
10 - Sleep in total darkness. Switch off your phones, devices and wifi
11 - Do ‘dry January’ and stop drinking for a month
12 - And for the men - wear frozen underwear
Maria gave birth to Joaquin Jr. Ontiveros at 11.58pm on 31 December 2017, and gave birth to his sister Aitana de Jesus Ontiveros at 12.16am on 1 January 2018.
The doctor who delivered the babies was also in shock, having never seen anything like this before in his 30-year career.
WATCH: Maria Flores gave birth to her baby twins in different YEARS!
(Credit: Twitter/ Economic Times)
Dr. Seyed Tamjidi told KGET News: "I've been in the practice for almost 30 plus years, and I've never had the opportunity to do anything like that before."
Amazingly, Aitana was the first baby born in 2018, which means that the family will be gifted $3,000 worth of baby supplies as per the hospital's annual tradition.
Baby Aitana is learning to share with her brother VERY early on in her life!
The twins are the youngest of five in the Ontiveros family, and have three older sisters whose ages are between six and 18.
Congratulations to the happy family!
**Are you a twin? Were you nearly born on a different day to your sibling? We want to hear from you! Let us know over on **Facebook and Twitter.
READ MORE...
Want to know how to get pregnant with twins? Here's everything you need to know...
Twin names: 75 perfectly matched names for girl twins, boy twins AND boy/girl twins!