存储日期的最佳方式是什么？

Question

I am a new to storing dates based on time zones.

Need to know the standard way to store the date in the datastore.

My requirements are

1. Easy to query the date based on the date range.
2. show the date with the client appropriate time zone selected by him(I am having a table maintained for the timezone separately)
3. Able to query using the datastore Admin console also.

Any suggestions/ideas regarding this will be a great help in proceeding further.

Answer 1

Always convert and store data/time in UTC so the data become easily understandable and non-ambiguous

Only convert the date/time back to "local time" of the user for displaying purpose.

Answer 2

It's a good idea to store dates in UTC/GMT equivalent millisecond format. On the result of which it will be easy to convert back and forth to appropriate time zone based on offset either from UI or server side. I believe date in database should be zone independent to avoid unnecessary​ complexity.

The best/easy way to handle zone conversation is from UI using JavaScript, as clients side will be always local time. There are multiple JS plugins available to handle this.

Here is one MomentJS