Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Join the Fabric FabCon Global Hackathon—running virtually through Nov 3. Open to all skill levels. $10,000 in prizes! Register now.

Reply
Alessandro_Scal
Frequent Visitor

Time series

Hi Everybody,

 

I have generated a time series using the following code: GENERATESERIES(DATE(2023,1,1),DATE(2023,12,31),TIME(0,15,0)).

 

Everything seems fine until a certain point where the increment of 15 minutes is somehow reduced to 14 minutes and 59 seconds... does anyone know why this happens and how to fix it? I need to have an increase of exactly 15 minutes for every row. 

 

Alessandro_Scal_0-1694163870608.png

 

Thank you!

 

Alessandro

 

 

 

1 ACCEPTED SOLUTION
HotChilli
Super User
Super User

The Time value will be represented by a decimal number behind-the-scenes and the Generateseries algorithm, at some point, is losing something when translating between decimals and time values.  That's my best guess. 

Maybe one way to solve this is to replace the TIME with your own decimal.  I think 

0.041666667 / 4

might work but you'll need to test at your side.

0.041666667 is the decimal representation of 1 hour,  (1/24)  but with some rounding applied.

 

It will still break at some point if the sequence is long enough (i.e. more years in the sequence).

----

My solution is just a workaround really.  Maybe there is a better way of doing it (Power Query probably)

View solution in original post

2 REPLIES 2
Alessandro_Scal
Frequent Visitor

Workaround or not, it worked just fine!

 

Thanks

 

A

HotChilli
Super User
Super User

The Time value will be represented by a decimal number behind-the-scenes and the Generateseries algorithm, at some point, is losing something when translating between decimals and time values.  That's my best guess. 

Maybe one way to solve this is to replace the TIME with your own decimal.  I think 

0.041666667 / 4

might work but you'll need to test at your side.

0.041666667 is the decimal representation of 1 hour,  (1/24)  but with some rounding applied.

 

It will still break at some point if the sequence is long enough (i.e. more years in the sequence).

----

My solution is just a workaround really.  Maybe there is a better way of doing it (Power Query probably)

Helpful resources

Announcements
September Power BI Update Carousel

Power BI Monthly Update - September 2025

Check out the September 2025 Power BI update to learn about new features.

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.

Top Solution Authors
Top Kudoed Authors