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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Let me start by referring you to PHP's DateTime implementation. There is a library called Carbon that uses this DateTime implementation and added almost all the methods you have (but better). So there really is no need to create your own just to be able to display Dutch names. That way to can get rid of the nasty "globals".
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