add support Timezone to Scheduling Lambda functions #3008
Description
Environment information
System:
OS: Linux 6.6 Debian GNU/Linux 11 (bullseye) 11 (bullseye)
CPU: (8) arm64 unknown
Memory: 19.20 GB / 23.43 GB
Shell: /bin/bash
Binaries:
Node: 22.16.0 - /usr/local/bin/node
Yarn: 1.22.22 - /usr/local/bin/yarn
npm: 10.9.2 - /usr/local/bin/npm
pnpm: undefined - undefined
NPM Packages:
@aws-amplify/auth-construct: 1.8.1
@aws-amplify/backend: 1.16.1
@aws-amplify/backend-ai: Not Found
@aws-amplify/backend-auth: 1.7.1
@aws-amplify/backend-cli: 1.8.0
@aws-amplify/backend-data: 1.6.1
@aws-amplify/backend-deployer: 2.1.3
@aws-amplify/backend-function: 1.14.1
@aws-amplify/backend-output-storage: 1.3.1
@aws-amplify/backend-secret: 1.4.0
@aws-amplify/backend-storage: 1.4.1
@aws-amplify/cli-core: 2.2.1
@aws-amplify/client-config: 1.8.0
@aws-amplify/data-construct: 1.16.3
@aws-amplify/data-schema: 1.21.0
@aws-amplify/deployed-backend-client: 1.8.0
@aws-amplify/form-generator: 1.2.1
@aws-amplify/model-generator: 1.2.0
@aws-amplify/platform-core: 1.10.0
@aws-amplify/plugin-types: 1.11.0
@aws-amplify/sandbox: 2.1.2
@aws-amplify/schema-generator: 1.4.0
@aws-cdk/toolkit-lib: 1.1.1
aws-amplify: 6.15.3
aws-cdk-lib: 2.189.1
typescript: 5.8.3
No AWS environment variables
No CDK environment variables
Describe the feature
// now
import { defineFunction } from "@aws-amplify/backend";
export const remindMe = defineFunction({
name: "remind-me-to-take-the-trash-out",
schedule: [
// every tuesday at 9am
"0 9 ? * 3 *",
// every friday at 9am
"0 9 ? * 6 *",
]
})// timezone supported feature
import { defineFunction } from "@aws-amplify/backend";
export const remindMe = defineFunction({
name: "remind-me-to-take-the-trash-out",
schedule: [
// every tuesday at 9am in Aisa/Tokyo
{ cron: "0 9 ? * 3 *", timezone: "Aisa/Tokyo" },
// every friday at 9am
"0 9 ? * 6 *",
]
})Function schedules are powered by Amazon EventBridge rules, so not supported timezone.
We need to migrate to EventBridge Scheduler to support timezone.
Use case
I would like to execute a Lambda function at 00:00 on the first day of every month in Japan Standard Time.
However, the schedule's time zone is UTC. The equivalent of 00:00 on the first day of every month in Japan Standard Time (+09:00) is 15:00 on the last day of the previous month in UTC. Cron expressions cannot be set to the last day of the month.