Comment by adrian_b

Here the problem is that past "time" values and future "time" values should be different data types, e.g. "Time" and "FutureTime".

A past time value (e.g. the times of logged events) actually is a time value that is known and it should be stored as a TAI or UTC value and when desired it can be converted to any date/time format for presentation purposes.

In most cases, a future time value is not a known time value yet and it must be stored as a more complex data type, at the minimum including the local time and the time zone, but for more distant future dates preferably also including the exact geographic location, for the eventuality of changes in the time zone laws.

Therefore, both you and the poster to whom you have replied are right, but you are right only when talking about future time values, while the other poster was right only when talking about past time values.