--- title: "What is \"A Day in OFS\" and How Reports Handle Shifts and Jobs Crossing Midnight" description: Understand how OFS groups data to enable accurate comparisons over time, whilst preserving valuable contextual information. --- [Skip to content](https://support.ofsystems.com/the-concept-of-a-day-in-ofs#main-content) ![OFS\_Circle.png\]](https://support.ofsystems.com/hs-fs/hubfs/OFS_Circle.png?height=45&name=OFS_Circle.png) - [OFS Customer Portal](https://support.ofsystems.com/) - [Main Website](https://ofsystems.com/) - [Contact Us](https://www.ofsystems.com/contact-us?) - [Service Portal](https://ofsystems.atlassian.net/servicedesk/customer/portal/1) Open main navigation Close main navigation - [OFS Customer Portal](https://support.ofsystems.com/) - [Main Website](https://ofsystems.com/) - [Contact Us](https://www.ofsystems.com/contact-us?) - [Service Portal](https://ofsystems.atlassian.net/servicedesk/customer/portal/1) Welcome to the OFS Customer Portal - There are no suggestions because the search field is empty. 1. [OFS Customer Portal](https://support.ofsystems.com/?hsLang=en) 2. [FAQs](https://support.ofsystems.com/faqs?hsLang=en) 3. [Analytics](https://support.ofsystems.com/faqs?hsLang=en#analytics) # What is "A Day in OFS" and How Reports Handle Shifts and Jobs Crossing Midnight ## This article explains the core principle of how OFS assigns data from shifts and jobs that run across the midnight boundary (12:00 AM). ### Core Principle: Reporting by Start Time In OFS, all reporting is anchored to the **start time** of a "span," such as a shift or a job. - By default, OFS uses a standard 12:00 AM to 12:00 AM calendar day boundary. - Any shift or job is assigned **in its entirety** to the calendar day on which it *began*. - The data is **never split** at the midnight boundary. This is a fundamental design choice to preserve the complete context of a shift or job, ensuring that all related performance and quality data remain intact. ### What This Means for Daily Reports This "report by start day" method can sometimes produce results that seem unintuitive at first. For example, you might see **over 24 hours' worth of production data** in a single daily report. > **Example Scenario:** > > - A **Day Shift** runs Monday from 6:00 AM to 2:00 PM. > - An **Afternoon Shift** runs Monday from 2:00 PM to 10:00 PM. > - A **Night Shift** runs from Monday 10:00 PM to Tuesday 6:00 AM. > > In a default 12am-12am report for Monday, OFS will include the full 8 hours from the Day Shift, the full 8 hours from the Afternoon Shift, AND the full 8 hours from the Night Shift (because it *started* on Monday). > > **Result:** The "Monday" report will contain 24 hours of production data, appearing in a logical sequence (Day, Afternoon, Night). ### Conclusion: Consistency is Key As long as your shifts have regular start and end times this will provide a basis for accurate comparison. - [Getting Started](https://support.ofsystems.com/getting-started?hsLang=en#main-content) - [Console: The Basics](https://support.ofsystems.com/getting-started?hsLang=en#console-the-basics) - [Analytics: The Basics](https://support.ofsystems.com/getting-started?hsLang=en#analytics-the-basics) - [Fusion Manager: The Basics](https://support.ofsystems.com/getting-started?hsLang=en#fusion-manager-the-basics) - [OFS-Flow Training : The Basics](https://support.ofsystems.com/getting-started?hsLang=en#ofs-flow-training-the-basics) - [OFS-Go](https://support.ofsystems.com/getting-started?hsLang=en#ofs-go) - [MayvnAI](https://support.ofsystems.com/getting-started?hsLang=en#mayvnai) - [Help & Support](https://support.ofsystems.com/help-support?hsLang=en#main-content) - [Troubleshooting](https://support.ofsystems.com/help-support?hsLang=en#troubleshooting) - [OFS in a Box](https://support.ofsystems.com/help-support?hsLang=en#ofs-in-a-box) - [Routers](https://support.ofsystems.com/help-support?hsLang=en#routers) - [PLCs](https://support.ofsystems.com/help-support?hsLang=en#plcs) - [Success with MayvnAI](https://support.ofsystems.com/success-with-mayvnai?hsLang=en) - [Training Videos](https://support.ofsystems.com/training-videos?hsLang=en#main-content) - [Operator Console](https://support.ofsystems.com/training-videos?hsLang=en#operator-console) - [OFS Analytics](https://support.ofsystems.com/training-videos?hsLang=en#ofs-analytics) - [Fusion-Manager](https://support.ofsystems.com/training-videos?hsLang=en#fusion-manager) - [OFS-Flow](https://support.ofsystems.com/training-videos?hsLang=en#ofs-flow) - [OFS-Go](https://support.ofsystems.com/training-videos?hsLang=en#ofs-go) - [How To Questions](https://support.ofsystems.com/how-to-questions?hsLang=en#main-content) - [Administration](https://support.ofsystems.com/how-to-questions?hsLang=en#administration) - [Operator Console](https://support.ofsystems.com/how-to-questions?hsLang=en#operator-console) - [Analytics](https://support.ofsystems.com/how-to-questions?hsLang=en#analytics) - [Fusion Manager](https://support.ofsystems.com/how-to-questions?hsLang=en#fusion-manager) - [Fusion Manager - Alerts & Services](https://support.ofsystems.com/how-to-questions?hsLang=en#fusion-manager-alerts-services) - [Flow](https://support.ofsystems.com/how-to-questions?hsLang=en#flow) - [Flow - Validations](https://support.ofsystems.com/how-to-questions?hsLang=en#flow-validations) - [Flow - Conditional Expression & Triggers](https://support.ofsystems.com/how-to-questions?hsLang=en#flow-conditional-expression-triggers) - [APIs](https://support.ofsystems.com/how-to-questions?hsLang=en#apis) - [FAQs](https://support.ofsystems.com/faqs?hsLang=en#main-content) - [Operator Console](https://support.ofsystems.com/faqs?hsLang=en#operator-console) - [Fusion Manager](https://support.ofsystems.com/faqs?hsLang=en#fusion-manager) - [Analytics](https://support.ofsystems.com/faqs?hsLang=en#analytics) - [OFS-Flow](https://support.ofsystems.com/faqs?hsLang=en#ofs-flow) - [Case Studies](https://support.ofsystems.com/case-studies?hsLang=en#main-content) - [Mavyn AI](https://support.ofsystems.com/case-studies?hsLang=en#mavyn-ai) - [OFS Guides](https://support.ofsystems.com/ofs-guides?hsLang=en) - [Webinars](https://support.ofsystems.com/webinars?hsLang=en) [![](https://support.ofsystems.com/hs-fs/hubfs/Logo%20Medium_no%20words.png?width=128&height=68&name=Logo%20Medium_no%20words.png)](http://ofsystems.com) Operations Feedback Pty Ltd 7/627 Chapel St, South Yarra, VIC 3123 +61 3 8684 9859 [mailto:support@ofsystems.com](mailto:support@ofsystems.com) Copyright © 2025, Operations Feedback Systems Pty Ltd.