How to Set Up an Overnight Shift in EDGEBIC (Crossing Midnight)

To set up an overnight shift in EDGEBIC, enter the times exactly as the crew works them on the Shift Configuration dialog, with the evening start and the morning end. An end time at or before the start (22:00 to 06:00, or 16:00 to 00:00) is read as crossing midnight, and the wrap-around arithmetic is handled for you. There is no special overnight checkbox.

The one thing worth internalizing is day attribution: overnight hours count on the day the shift starts, not the day it ends. Get that and everything else follows. This page is the single task. For the whole calendar model these hours live in, read shifts and calendars explained from EDGEBIC by User Solutions.

Before You Start

• You know the real start and end times, including how far into the morning the shift runs.
• You know the days it starts, which is not always the days you think (a Friday-start night shift runs into Saturday).
• You know which work centers run it, and whether any are on a custom calendar.
• You can rerun the schedule.

Step 1: Open the Shift Configuration Dialog

Open the Daily Hours tab, select the inner Shift tab, and click Add Shift. The Shift Configuration dialog opens with the heading Add Shift.

To edit an existing shift into an overnight pattern instead, click the pencil icon in the Actions column of its row.

Step 2: Name It

Enter the name in Shift Name: Night Shift, Graveyard, Third Shift. Name it for when it runs, since this label appears on every allocation record and capacity screen.

Step 3: Enter the Wrap-Around Times

In the Daily Working Hours section, tick the days the shift starts, then set Start: to the evening time and End: to the morning time.

Two common patterns:

Enter them literally. The dialog detects that the end is at or before the start and treats the shift as running past midnight, adding a day to the end internally. The row's computed duration (⏱) confirms the math: 22:00 to 06:00 shows 8h, not a negative number.

Step 4: Mind the Days You Tick

Tick the evenings the crew actually clocks in, not the mornings they clock out.

A night shift running Sunday through Thursday nights means you tick Sunday, Monday, Tuesday, Wednesday, Thursday. The Sunday-night crew's hours run into Monday morning but count as Sunday. Friday and Saturday stay unticked, because a Friday-start shift would run into Saturday morning, and a Saturday-start into Sunday.

This is where day attribution bites, so decide the start days on purpose.

Step 5: Save

Click Save Shift (💾). The shift appears in the grid with its weekly Total Hours.

Step 6: Attach It to the Right Work Centers

A shift produces capacity only on the work centers attached to it. Open the Workcenter tab and check the Shift Calendar column:

• Global (green): the work center inherits the new shift automatically.
• Custom (amber): add the shift to the machine's own Associated Shifts list first (how to give one work center its own calendar).

For around-the-clock coverage, attach both the day and night shifts to the machine. One shift alone leaves it dark for the other half of the day.

How the Hours Are Attributed

The scheduler credits overnight hours to the calendar day the shift starts on. A 22:00 to 06:00 shift beginning Monday puts all 8 hours against Monday, even though 6 of them fall in Tuesday's early hours by the clock. Read every night allocation against its start day and the plan lines up. This is documented behavior, not a rounding quirk, and it is why night bars can appear "a day early" on the Gantt.

What Changes When You Save

How to Check It Worked

1. Confirm the shift's Total Hours on the grid (40 for five 8-hour nights).
2. Open the Resource Calendar and read a work center's capacity. With both a day and a night 8-hour shift attached, a one-instance machine should read 16 hours.
3. Run Drive Schedule and open the Gantt. Night bars should sit in the evening-into-morning block, attributed to their start day.
4. Confirm a long job flows across the day-to-night handover without a gap, if both shifts are on the machine.

Common Mistakes

Ticking the wrong days. Ticking the mornings the shift ends instead of the evenings it starts shifts every night by a day and can put production into an unintended weekend. Tick start days.

Attaching only one shift. Around-the-clock capacity needs both shifts on the machine. A day-only mill produces nothing at night regardless of how the night shift is defined.

Reading the allocation against the wrong day. Overnight hours count on the start day. A Monday-evening shift's early-Tuesday work is Monday's, and treating it as Tuesday's is the most common misread, listed under our shift and calendar mistakes.

Forgetting the rerun. Adding the shift raises available capacity, but no job moves onto the nights until Drive Schedule runs.

Next

An overnight shift is just a shift with wrap-around times and one rule to remember: hours count on the start day. Pair it with the day shift on the same machines for round-the-clock capacity. To add that day shift or a second crew, see how to add a second shift. More single-task recipes are in the EDGEBIC how-to hub, and the platform overview is at /edgebic.