Controlling dates and times has always been a troublesome topic for global systems. Server clock vs server code such as new Date() which may create a date in the local timezone of the server vs the Browser or clients timezone. Moving to the cloud only makes the problem worse when you need to consider the timezone the server might be in and inherit from it's system clock.
If everyone worked off of a globally understood format that is not subject to misinterpretation things would be more simple. Example: 03/02/2019 is this March second or Feb 3rd? Depends which country you live in. Owl only accepts this format: 2019-03-02. Extending this to time would mean 2019-03-02 00:00:00
./owlcheck -ds trades -rd "2019-04-01" or -rd "2019-04-01 00:00:00"
A user running an OwlCheck in New York and a user running an OwlCheck 3 hrs later in CA.
Stored in Owl (UTC)
As you can see these jobs actually run 3 hrs apart even though they appear to run first thing in the morning to each user. Owl stores all dates in a common UTC format for global consistency.
http://localhost:9000/dq/hoot?dataset=atmCustomers&runId=2019-04-01 00:00:00&tz=EST http://localhost:9000/dq/hoot?dataset=atmCustomers&runId=2019-04-01 00:00:00&tz=PST