# Anki Time Intervals Changing By Itself
**URL:** https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125
**Category:** Help
**Created:** [January 2, 2024, 7:35pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125 "2024-01-02T19:35:21Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Manferfilho](https://forums.ankiweb.net/u/Manferfilho)
#### Post date: [January 2, 2024, 7:35pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/1 "2024-01-02T19:35:22Z")
Hi guys!
My anki time interval on “hard” just went from 12.5h to 1 day by itself,while i was doing my deck.Can someone explain to me why this happened? Is it related to the algorithm or the settings settled? HELP!
It’s the AnKing deck
\*All cards went to that time interval - new cards and the old ones as well
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### Author:  [@Danika\_Dakika](https://forums.ankiweb.net/u/Danika_Dakika)
#### Post date: [January 2, 2024, 8:23pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/2 "2024-01-02T20:23:09Z")
What are your learning steps?
What time of day were you studying?
What is your start-next-day-at time?
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### Author:  [@Manferfilho](https://forums.ankiweb.net/u/Manferfilho)
#### Post date: [January 2, 2024, 9:00pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/3 "2024-01-02T21:00:34Z")
Thank you for the reply,Danika!
I was studying from 8am to 5pm.I’m from Brazil,i don’t know if Anki related to the US GMT or my local time.
My settings:
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### Author:  [@Danika\_Dakika](https://forums.ankiweb.net/u/Danika_Dakika)
#### Post date: [January 2, 2024, 9:22pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/4 "2024-01-02T21:22:24Z")
It would be your own (your device’s) timezone.
You can find your next-day time in your [Preferences - Anki Manual](https://docs.ankiweb.net/preferences.html#review). The default is 4am.
For the Hard button on a card in learning/relearning steps, the interval is the average of Again (same step you are on) and Good (the next step) – [Studying - Anki Manual](https://docs.ankiweb.net/studying.html#learningrelearning-cards). That’s why you usually see 12.5h – it’s about halfway between 25m and 1d.
But if a step will cross the day boundary, it is automatically converted to days. So, for you, anything you study after 3:30pm will give you a 1d interval for Hard – since you won’t be able to study it in 12.5 hours and have it sitll be today.
Converting short intervals to days is probably how you want it. A “1d” interval doesn’t mean you have to wait 24h to see the card – it’s the opposite. The card will be available to study with all other cards that are due that **day** – starting at 4am or whenever your day-boundary is.
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### Author:  [@Manferfilho](https://forums.ankiweb.net/u/Manferfilho)
#### Post date: [January 2, 2024, 9:27pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/5 "2024-01-02T21:27:29Z")
Thank you so much,Danika! I appreciate it!
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### Author:  [@system](https://forums.ankiweb.net/u/system)
#### Post date: [February 1, 2024, 9:27pm UTC](https://forums.ankiweb.net/t/anki-time-intervals-changing-by-itself/39125/6 "2024-02-01T21:27:30Z")
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