---
configs:
- config_name: default
  data_files:
  - split: clock
    path: data/clock-*
  - split: calendar
    path: data/calendar-*
dataset_info:
  features:
  - name: type
    dtype: string
  - name: question
    dtype: string
  - name: answer
    dtype: string
  - name: image
    dtype: image
  splits:
  - name: clock
    num_bytes: 2965224.0
    num_examples: 62
  - name: calendar
    num_bytes: 13630746.0
    num_examples: 60
  download_size: 5231483
  dataset_size: 16595970.0
task_categories:
- image-text-to-text
---


# Clock and Calendar Dataset

## Overview
This dataset comprises a **small** sample of two subsets: **Clock** and **Calendar**. 
Each subset contains images paired with corresponding questions and answers, making it suitable for evaluating the reasoning capabilities of multimodal large language models (MLLMs) for calendar and analog clock interpretation.

## Dataset Structure
The dataset is organized into two main categories:
- **Clock Dataset**
- **Calendar Dataset**

Each entry in the dataset includes:
- **type**: Category of the clock/ year of calendar.
- **question**: A question related to the time or date displayed in the image.
- **answer**: The correct answer to the question.
- **image**: Image of clock or calendar.

## Clock Dataset
The Clock dataset contains various types of clock images with associated questions and answers about the time shown.

### Clock Data Categories:
- **Basic clock**: Standard analog clocks.
- **Black dial clock**: Clocks with a black dial background.
- **No second hand**: Clocks without a second hand.
- **Easy**: Clocks displaying simple hour-based times (e.g., 1-hour, 2-hour marks).
- **Roman**: Clocks using Roman numerals for hour representation.
- **Hand as arrows**: Clocks where the hands are represented as arrows.


## Calendar Dataset
The Calendar dataset contains images of yearly calendars with questions related to specific dates.

### Calendar Data Categories:
- **Popular days**: Questions related to Christmas and New Year's Day.
- **Less popular day**: Questions about the Ides of March (March 15th).
- **Random date**: Questions about a randomly selected date (November 21st).
- **Count-based days**: Questions about the 100th and 153rd day of the year.

## Citation
```
@misc{saxena2025losttimeclockcalendar,
      title={Lost in Time: Clock and Calendar Understanding Challenges in Multimodal LLMs}, 
      author={Rohit Saxena and Aryo Pradipta Gema and Pasquale Minervini},
      year={2025},
      eprint={2502.05092},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2502.05092}, 
}
```

## Acknowledgments
This dataset was compiled for research and development purposes.