> For the complete documentation index, see [llms.txt](https://docs.zerowork.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zerowork.io/using-zerowork/using-building-blocks/start-condition-and-set-condition/before-date-and-after-date.md).
# Before (Date) & After (Date)
This condition checks if a calendar date is smaller or greater than a comparison date.
#### Days shift
This is a shift added to the date that you enter in the field *Enter days shift*. It can be a positive or negative number.
#### Example: 3 days shift
Image that you entered the comparison date as 10th of July and 3 days shift, as shown below:
This set-up will convert the comparison date from 10th of July to 13th of July (07/13/2023).
**On *****After*****:** The condition will be met if the reference date (the one entered in *Start Condition* building block) is 14th or any day after 14th, which is later than 13th.
**On *****Before*****:** The condition will be met if the reference date (the one entered in *Start Condition* building block) is 12th or any day before 12th, which is earlier than 13th.
#### Example: -2 days shift
Negative numbers are accepted, too.
This set-up will convert the comparison date from 10th of July to 8th of July (07/08/2023).
**On *****After*****:** The condition will be met if the reference date (the one entered in *Start Condition* building block) is 9th or any day after 9th, which is later than 8th.
**On *****Before*****:** The condition will be met if the reference date (the one entered in *Start Condition* building block) is 7th or any day before 7th, which is earlier than 8th.
#### Date format
The date format between the comparison date and the reference date must be consistent, otherwise the comparison would be error-prone.
You can change the date format in the date settings as shown below.
