🟪 Date check

The Date Check block automatically compares the current date and time (fetched by the block itself — nothing to connect for that) to a reference date you choose, to find out whether we are before or after that date.

This block is particularly useful for managing time constraints in interactive experiences, such as time-limited promotions, seasonal events or deadline validations.

📥 Entries

• date (Date/Formatted Text): Reference date the current date and time will be compared to. Must be in compatible format (e.g. YYYY-MM-DD or YYYY-MM-DDTHH:MM:SSZ).

📤 Outings

• before (Stream): Flow activated if the current date and time are before or equal to the reference date.
• after (Stream): Flow activated if the current date and time are strictly after the reference date.

💡 Example of use

Scenario: Validation of a promotional code before expiration

1. A user enters a promotional code into your Celestory module.
2. The flow triggers the Date check block, configured with the reference date 2024-12-31 in the date field.
3. The block then compares this date to the current date and time on its own, with nothing else to set up.
4. If we are before December 31, 2024, the flow takes the before output and applies the discount.
5. If we are after, the flow takes the after output and displays a message: "Sorry, this promotion has expired."

⚙️ Technical Details

• Date format: The block expects a strict ISO format (YYYY-MM-DD or YYYY-MM-DDTHH:MM:SSZ). Format errors can cause unexpected behavior.
• Time zone: The current date and time are fetched from an online service, always set to the Europe/Paris time zone (not configurable). Keep this in mind if your story is aimed at an audience in another time zone.
• Error handling: If the service providing the current date and time is unavailable, the block defaults to the before output.

Documented version: v1

Updated on: 06/09/2026