Time and Date modules
Core Timestamp (core) The widget saves the current timestamp when empty. Datetime (datetime) Date type: Date + time, Date only...
#Date
Articles
Date Fields
Store dates, with or without time, and date ranges.
Region and Date formats
Your visitors may come from different places and timezones.
Issues
Changing the date recur rule for a series that has overrides is confusing
Smart dates let you set up a recurring rule, and then override instances. What should happen when you change the rule? This is a...
[META] Add timezone support to core date fields
Support storing timezone with datetime.
[meta] DateTime Module Improvements
Meta issue for datetime module improvements.
Incorporate the single value delete button from Drupal core 10.2
Not possible to remove an instance of a multivalue recurring field.
Allow end date to be optional
Allow datetime range end date to be optional.
Customise display of missing end date
How to display datetime range value with missing end date.
How to set date field with correct timezone
It's hard to set date fields with the correct timezone.