Converting Datetime to ISO 8601 Format in SAS

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Summary: Learn how to convert datetime values to ISO 8601 format in SAS with examples and step-by-step guidance.
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Datetime formatting is a crucial aspect of data processing, especially when dealing with different systems or platforms. The ISO 8601 format provides a standardized representation of datetime values, making it easier for data interchange. In SAS, you can convert datetime values to ISO 8601 format using the PUT function and appropriate format modifiers.

Let's explore a step-by-step guide with examples:

Understanding ISO 8601 Format
ISO 8601 has a specific format for datetime representation: YYYY-MM-DDTHH:MI:SS, where:

YYYY represents the four-digit year.

MM is the two-digit month (01-12).

DD is the two-digit day of the month (01-31).

T is the separator between date and time.

HH represents the two-digit hour (00-23).

MI represents the two-digit minute (00-59).

SS represents the two-digit second (00-59).

Converting Datetime to ISO 8601 in SAS
In SAS, you can use the PUT function along with appropriate format modifiers to achieve the conversion. Here's a basic example:

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In this example, replace the originalDatetime value with your actual datetime variable. The datetime20. format is used to specify the ISO 8601 format.

Handling Datetime Variables
If your datetime is stored in a variable, you can use the same approach. Here's an example:

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Replace YourDataset with the actual dataset containing your datetime variable.

Dealing with Different Datetime Formats
If your datetime values are in a different format, you might need to convert them first using appropriate informat. For example:

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In this example, the input function is used to convert the datetime string to a SAS datetime value.

By following these examples, you can effectively convert datetime values to ISO 8601 format in SAS, ensuring consistency and compatibility in your data processing workflows.