relatively new to excel here.
Pt.1 - Creating a dynamic weekday timeline based on hours
I'm trying to make a timeline based on the hours of each task, like so:
I know how to just add hours to a date&time, but there are a few other things I have to take into account:
- Days only run from 08:00 h to 16:00 h, any task that runs past 16:00 h on one day is continued on the next.
- Only counts weekdays, so it goes from Mon->Fri and Fri->Mon
The idea is that I can use this table for any project, and just knowing the time required for each task generates a timeline.
Pt.2 - Adding a column for actual completed dates
To make it even more complicated, I want to add another column, where I can write in when I actually completed a task, that then updates the rest of the table, like this:
I've currently got some massive and admittedly disorganized formulas in the Start and End Columns, though I suspect its better off starting from scratch. They dont work all the time (don't skip weekends, count hours outside the 8am-16pm range), and they are as follows:
Start:=IF(W9<>"", IF(TIME(HOUR(AA8), MINUTE(AA8), SECOND(AA8))<TIME(16,0,0),AA8,DATE(YEAR(AA8),MONTH(AA8),DAY(AA8))+1+TIME(8,0,0))+SUM(INT((WEEKDAY(AA8-{1,7})+DATE(YEAR(AA8),MONTH(AA8),DAY(AA8))+1+TIME(8,0,0)-AA8)/7)), "")=IF(W9<>"", IF(TIME(HOUR(AA8), MINUTE(AA8), SECOND(AA8))<TIME(16,0,0),AA8,DATE(YEAR(AA8),MONTH(AA8),DAY(AA8))+1+TIME(8,0,0))+SUM(INT((WEEKDAY(AA8-{1,7})+DATE(YEAR(AA8),MONTH(AA8),DAY(AA8))+1+TIME(8,0,0)-AA8)/7)), "")
End:=IF(AB10="", IF(W10<>"", IF(TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1,0,0)>TIME(16,0,0), IF(Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1, 0, 0)>TIME(16, 0, 0), IF(HOUR(DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0))=8, DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0)-(2/3), DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0)), Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1, 0, 0)), Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10), 0, 0))+SUM(INT((WEEKDAY(Z10-{1,7})+IF(TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1,0,0)>TIME(16,0,0), IF(Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1, 0, 0)>TIME(16, 0, 0), IF(HOUR(DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0))=8, DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0)-(2/3), DATE(YEAR(Z10),MONTH(Z10),DAY(Z10+1))+TIME(8,0,0)+ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0)+TIME(((((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8)-ROUNDDOWN(((HOUR((TIME(HOUR(Z10),MINUTE(Z10),SECOND(Z10))))+IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1)-16)/8, 0))*8, 0, 0)), Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10)+1, 0, 0)), Z10+TIME(IF(ISNUMBER(SEARCH("Concept", W10)), Y10/3, Y10), 0, 0))-Z10)/7)), ""), AB10+AC10)