Amazon Forecast is no longer available to new customers. Existing customers of Amazon Forecast can continue to use the service as normal. [Learn more"](https://aws.amazon.com/blogs/machine-learning/transition-your-amazon-forecast-usage-to-amazon-sagemaker-canvas/)

# Data Aggregation Assumptions
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Forecast doesn't assume that your data is from any specific time zone. However, it makes the following assumptions when aggregating time series data:
+ All data is from the same time zone.
+ All forecasts are in the same time zone as the data in the dataset.
+ If you specify the [SupplementaryFeature](API_SupplementaryFeature.md) holiday feature in the [InputDataConfig](API_InputDataConfig.md) parameter for the [CreatePredictor](API_CreatePredictor.md) operation, the input data is from the same country.