Automatically highlighting conflicting/overlapping times on same dates

M

monty12321

New Member
Joined
Aug 27, 2019
Messages
6
Good afternoon,

I was wondering if you could use your help on excel. I have a excel spreadsheet which automatically imports room bookings data from the Microsoft word forms. However, sometimes we get clashes with requests overlapping each other. I would like this to be highlighted automatically instead of manually checking it. Below is the sample:
[TABLE="width: 376"]
<tbody>[TR]
[TD]Course Type
[/TD]
[TD]Date
[/TD]
[TD]Start and End Time
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]08/12/2019
[/TD]
[TD]09:00-13:00
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]08/12/2019
[/TD]
[TD]09:00-14:00
[/TD]
[/TR]
[TR]
[TD]Training
[/TD]
[TD]15/08/2019
[/TD]
[TD]09:00-16:00
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]16/08/2019
[/TD]
[TD]09:00-17:00
[/TD]
[/TR]
[TR]
[TD]Training
[/TD]
[TD]17/08/2019
[/TD]
[TD]09:00-17:00
[/TD]
[/TR]
[TR]
[TD]Training
[/TD]
[TD]18/08/2019
[/TD]
[TD]09:00-18:00
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]18/08/2020
[/TD]
[TD]15:00-18:00
[/TD]
[/TR]
[TR]
[TD]Training
[/TD]
[TD]20/08/2019
[/TD]
[TD]09:00-13:00
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]22/08/2019
[/TD]
[TD]08:00-15:00
[/TD]
[/TR]
[TR]
[TD]Training
[/TD]
[TD]22/08/2019
[/TD]
[TD]08:00-11:00
[/TD]
[/TR]
[TR]
[TD]Workshop
[/TD]
[TD]08/12/2019
[/TD]
[TD]09:00-13:00
[/TD]
[/TR]
</tbody>[/TABLE]

As you can see there are several overlaps/conflicts, but I must highlight this manually. Hence, is there a way to get excel to do this automatically. I understand this could be done by formula “Sumproduct” but, I was unable to get it to work thus I looked around and stumbled upon this https://www.mrexcel.com/forum/excel-questions/429758-find-time-overlaps.html and found the other formula(s) but i am still unable to get it working. The formula still gives the "False" value despite the overlaps/conflicts.

Therefore, any help would be much appreciated.

Thanks

Monty
 

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I hate working out time clashes!
Anyway, not sure if this is bulletproof but I thought I'd give it a go. What I would suggest is adding a few helper columns to the sheet so you have something like this:

[TABLE="class: grid, width: 500"]
<tbody>[TR]
[TD]Course Type[/TD]
[TD]Date[/TD]
[TD]Start and End Time[/TD]
[TD]Start[/TD]
[TD]End[/TD]
[TD]Clash[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]08/12/2019[/TD]
[TD]09:00-13:00[/TD]
[TD]=TIMEVALUE(LEFT(C2,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C2,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D2,$E$2:$E$12,">="&$D2,$B$2:$B$12,$B2)-1)+COUNTIFS($D$2:$D$12,">"&$D2,$D$2:$D$12,"<"&$E2,$B$2:$B$12,$B2))>0[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]08/12/2019[/TD]
[TD]09:00-14:00[/TD]
[TD]=TIMEVALUE(LEFT(C3,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C3,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D3,$E$2:$E$12,">="&$D3,$B$2:$B$12,$B3)-1)+COUNTIFS($D$2:$D$12,">"&$D3,$D$2:$D$12,"<"&$E3,$B$2:$B$12,$B3))>0[/TD]
[/TR]
[TR]
[TD]Training[/TD]
[TD]15/08/2019[/TD]
[TD]09:00-16:00[/TD]
[TD]=TIMEVALUE(LEFT(C4,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C4,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D4,$E$2:$E$12,">="&$D4,$B$2:$B$12,$B4)-1)+COUNTIFS($D$2:$D$12,">"&$D4,$D$2:$D$12,"<"&$E4,$B$2:$B$12,$B4))>0[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]16/08/2019[/TD]
[TD]09:00-17:00[/TD]
[TD]=TIMEVALUE(LEFT(C5,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C5,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D5,$E$2:$E$12,">="&$D5,$B$2:$B$12,$B5)-1)+COUNTIFS($D$2:$D$12,">"&$D5,$D$2:$D$12,"<"&$E5,$B$2:$B$12,$B5))>0[/TD]
[/TR]
[TR]
[TD]Training[/TD]
[TD]17/08/2019[/TD]
[TD]09:00-17:00[/TD]
[TD]=TIMEVALUE(LEFT(C6,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C6,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D6,$E$2:$E$12,">="&$D6,$B$2:$B$12,$B6)-1)+COUNTIFS($D$2:$D$12,">"&$D6,$D$2:$D$12,"<"&$E6,$B$2:$B$12,$B6))>0[/TD]
[/TR]
[TR]
[TD]Training[/TD]
[TD]18/08/2019[/TD]
[TD]09:00-18:00[/TD]
[TD]=TIMEVALUE(LEFT(C7,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C7,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D6,$E$2:$E$12,">="&$D6,$B$2:$B$12,$B6)-1)+COUNTIFS($D$2:$D$12,">"&$D6,$D$2:$D$12,"<"&$E6,$B$2:$B$12,$B6))>0[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]18/08/2019[/TD]
[TD]15:00-18:00[/TD]
[TD]=TIMEVALUE(LEFT(C8,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C8,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D8,$E$2:$E$12,">="&$D8,$B$2:$B$12,$B8)-1)+COUNTIFS($D$2:$D$12,">"&$D8,$D$2:$D$12,"<"&$E8,$B$2:$B$12,$B8))>0[/TD]
[/TR]
[TR]
[TD]Training[/TD]
[TD]20/08/2019[/TD]
[TD]09:00-13:00[/TD]
[TD]=TIMEVALUE(LEFT(C9,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C9,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D9,$E$2:$E$12,">="&$D9,$B$2:$B$12,$B9)-1)+COUNTIFS($D$2:$D$12,">"&$D9,$D$2:$D$12,"<"&$E9,$B$2:$B$12,$B9))>0[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]22/08/2019[/TD]
[TD]08:00-15:00[/TD]
[TD]=TIMEVALUE(LEFT(C10,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C10,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D9,$E$2:$E$12,">="&$D9,$B$2:$B$12,$B9)-1)+COUNTIFS($D$2:$D$12,">"&$D9,$D$2:$D$12,"<"&$E9,$B$2:$B$12,$B9))>0[/TD]
[/TR]
[TR]
[TD]Training[/TD]
[TD]22/08/2019[/TD]
[TD]08:00-11:00[/TD]
[TD]=TIMEVALUE(LEFT(C11,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C11,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D11,$E$2:$E$12,">="&$D11,$B$2:$B$12,$B11)-1)+COUNTIFS($D$2:$D$12,">"&$D11,$D$2:$D$12,"<"&$E11,$B$2:$B$12,$B11))>0[/TD]
[/TR]
[TR]
[TD]Workshop[/TD]
[TD]08/12/2019[/TD]
[TD]09:00-13:00[/TD]
[TD]=TIMEVALUE(LEFT(C12,5))[/TD]
[TD]=TIMEVALUE(RIGHT(C12,5))[/TD]
[TD]=((COUNTIFS($D$2:$D$12,"<="&$D12,$E$2:$E$12,">="&$D12,$B$2:$B$12,$B12)-1)+COUNTIFS($D$2:$D$12,">"&$D12,$D$2:$D$12,"<"&$E12,$B$2:$B$12,$B12))>0[/TD]
[/TR]
</tbody>[/TABLE]
 
Upvote 0
Is this a typo?
[TABLE="class: cms_table, width: 376"]
<tbody>[TR]
[TD]Workshop
[/TD]
[TD]18/08/2020
[/TD]
[TD]15:00-18:00[/TD]
[/TR]
</tbody>[/TABLE]

Shouldn't it be?
[TABLE="class: cms_table, width: 376"]
<tbody>[TR]
[TD]Workshop
[/TD]
[TD]18/08/2019
[/TD]
[TD]15:00-18:00
[/TD]
[/TR]
</tbody>[/TABLE]

M.
 
Upvote 0
Hey Gerald,

Currently, they are in indeed in a same column but they can be two different column if that helps.

Thanks,

Monty
 
Upvote 0
monty12321 said:
Marcelo,

Indeed, that my fault. It should be 18/08/2019. I'll see if i can edit the thread.
Click to expand...

Maybe...

[TABLE="class: grid"]
<tbody>[TR]
[TD="bgcolor: #DCE6F1"][/TD]
[TD="bgcolor: #DCE6F1"]
A​
[/TD]
[TD="bgcolor: #DCE6F1"]
B​
[/TD]
[TD="bgcolor: #DCE6F1"]
C​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
1​
[/TD]
[TD]
Course Type​
[/TD]
[TD]
Date​
[/TD]
[TD]
Start and End Time​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
2​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
08/12/2019​
[/TD]
[TD]
09:00-13:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
3​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
08/12/2019​
[/TD]
[TD]
09:00-14:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
4​
[/TD]
[TD]
Training​
[/TD]
[TD]
15/08/2019​
[/TD]
[TD]
09:00-16:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
5​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
16/08/2019​
[/TD]
[TD]
09:00-17:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
6​
[/TD]
[TD]
Training​
[/TD]
[TD]
17/08/2019​
[/TD]
[TD]
09:00-17:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
7​
[/TD]
[TD]
Training​
[/TD]
[TD]
18/08/2019​
[/TD]
[TD]
09:00-18:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
8​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
18/08/2019​
[/TD]
[TD]
15:00-18:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
9​
[/TD]
[TD]
Training​
[/TD]
[TD]
20/08/2019​
[/TD]
[TD]
09:00-13:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
10​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
22/08/2019​
[/TD]
[TD]
08:00-15:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
11​
[/TD]
[TD]
Training​
[/TD]
[TD]
22/08/2019​
[/TD]
[TD]
08:00-11:00​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
12​
[/TD]
[TD]
Workshop​
[/TD]
[TD]
08/12/2019​
[/TD]
[TD]
09:00-13:00​
[/TD]
[/TR]
</tbody>[/TABLE]


Select A2:C12

Home > Conditional Formatting > New rule > Use a formula to determine which cells to format

Insert this formula
=SUMPRODUCT(--($B$2:$B$12=$B2),--(1-((--"0"&LEFT($C$2:$C$12,5)>=--"0"&RIGHT($C2,5))+(--"0"&LEFT($C2,5)>=--"0"&RIGHT($C$2:$C$12,5)))))>1

pick the format you want (Font red in the example)

Hope this helps

M.
 
Last edited:
Upvote 0
monty12321 said:
Hey Gerald,

Currently, they are in indeed in a same column but they can be two different column if that helps.
Click to expand...

I hadn't seen that...

Try
Select your data, say A2:D20 (not the headers)

[Table="class: grid"][tr][td="bgcolor: #DCE6F1"][/td][td="bgcolor: #DCE6F1"]
A​
[/td][td="bgcolor: #DCE6F1"]
B​
[/td][td="bgcolor: #DCE6F1"]
C​
[/td][td="bgcolor: #DCE6F1"]
D​
[/td][/tr]
[tr][td="bgcolor: #DCE6F1"]
1​
[/td][td]
Course Type​
[/td][td]
Date​
[/td][td]
Start​
[/td][td]
End​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
2​
[/td][td]
Workshop​
[/td][td]
08/12/2019​
[/td][td]
09:00​
[/td][td]
13:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
3​
[/td][td]
Workshop​
[/td][td]
08/12/2019​
[/td][td]
09:00​
[/td][td]
14:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
4​
[/td][td]
Training​
[/td][td]
15/08/2019​
[/td][td]
09:00​
[/td][td]
16:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
5​
[/td][td]
Workshop​
[/td][td]
16/08/2019​
[/td][td]
09:00​
[/td][td]
17:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
6​
[/td][td]
Training​
[/td][td]
17/08/2019​
[/td][td]
09:00​
[/td][td]
17:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
7​
[/td][td]
Training​
[/td][td]
18/08/2019​
[/td][td]
09:00​
[/td][td]
18:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
8​
[/td][td]
Workshop​
[/td][td]
18/08/2019​
[/td][td]
15:00​
[/td][td]
18:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
9​
[/td][td]
Training​
[/td][td]
20/08/2019​
[/td][td]
09:00​
[/td][td]
13:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
10​
[/td][td]
Workshop​
[/td][td]
22/08/2019​
[/td][td]
08:00​
[/td][td]
15:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
11​
[/td][td]
Training​
[/td][td]
22/08/2019​
[/td][td]
08:00​
[/td][td]
11:00​
[/td][/tr]

[tr][td="bgcolor: #DCE6F1"]
12​
[/td][td]
Workshop​
[/td][td]
08/12/2019​
[/td][td]
09:00​
[/td][td]
13:00​
[/td][/tr]
[/table]


Use this formula in Conditional Formatting
=SUMPRODUCT(--($B$2:$B$20=$B2),--($C$2:$C$20<>""),--(1-(($C$2:$C$20>=$D2)+($C2>=$D$2:$D$20))))>1

M.
 
Last edited:
Upvote 0
All,


Apologiesfor the delayed response. Thank you very much for taking time out to help. Iappreciate your help.


Regards,

Monty
 
Upvote 0
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