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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.
Looking at this issue it seems a recent pull request should fix the strict mode problem. That said, the pull request is still open due to a failing test so you can either build from source with the pull request or looking at the comments in the issue, look at dateparser as is mentioned. It might suit your needs.
As I'm not familiar with the library, I won't be the greatest of help at that. Best recommendations I have for you is scrolling through the settings in the documentation and looking through the issues on their github, particularly the closed ones, to see if someone else is looking for the same features you are.