What is the correct string format for updating a custom Date/Time field?

AI generated answer (using internal Slack threads):

The correct string format for updating a custom Date/Time field in NetSuite is the ISO 8601 format, which is 'YYYY-MM-DDTHHMMSS'. However, the string needs to be converted to a JavaScript Date object before it can be used to set a custom date/time field. Here is an example of how you can do this:

javascript
var dateString = '2019-07-24T13:06:16.9591051';
var dateObject = new Date(dateString.substr(0, 23) + 'Z');

In this example, the string is first trimmed to remove the fractional seconds, and then 'Z' is appended to indicate that the time is in UTC. The resulting string is then passed to the JavaScript

Date

constructor to create a Date object. Please note that all Date objects in SuiteScript are in Pacific Time by default. If you need to work with dates and times in other time zones, you may need to adjust the date and time values accordingly. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******