I have a lambda that needs to be triggered daily at 5PM from 20th to 1st of every month. What would be the cron expression for it?

CodePudding user response：

You must use CloudWatch triggers to achieve this. To create a rule using the console

Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/

In the navigation pane, choose Events, Create rule.

For Event Source, do the following:

1. Choose Schedule.
2. Choose Fixed rate of and specify the schedule interval (for example, 5 minutes).
3. For Targets, choose Add target, Lambda function.
4. For Function, select the Lambda function that you created.
5. Choose Configure details.
6. For Rule definition, type a name and description for the rule.
7. Choose Create rule.

Refer: https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/RunLambdaSchedule.html

CodePudding user response：

Here is the cron expression (GMT Timezone):

0 17 20-1 * ? *