MinDate

MinDate[{date₁,date₂,…}]

gives the earliest date of the date_i.

MinDate[interval]

gives the beginning of the date interval interval.

MinDate[interval,gran]

gives the beginning of interval as specified by granularity gran.

Details

MinDate[dates] accepts dates in all standard date notations, including DateObject, DateInterval, DateList, AbsoluteTime and DateString formats.
For lists of dates, MinDate returns dates in the same form in which they were given. For TemporalData and Databin, DateObject expressions are returned.
MinDate[tseries] works on all forms of TemporalData, including TimeSeries and EventSeries.

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Find the first date in a list of date objects:

Find the first date in a list of dates in different forms:

Find the first timestamp of a TimeSeries object:

Find the first timestamp of a Databin object:

MinDate[data] is equivalent to the first element of DateBounds[data]:

MinDate[data] returns the earliest date in data and MaxDate[data] returns the latest date:

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