I’m struggling with JavaScript’s proposed new Temporal API. What I am trying to do should be straight-forward, yet I fail to find a convincing solution. I must be missing something.

The task is as follows: instantiate an object representation of an UTC datetime from variables for year, month, day, hour and minute.

My thinking is as follows:

• we are talking UTC so I need a Temporal.Instant;
• new Temporal.Instant() requires the timestamp in nanoseconds so that doesn’t work;
• Temporal.Instant.from() requires a ISO datetime string, which would require me to generate a properly formatted piece of text from the five variables I have — this is possible but a bit of a hack and kinda defeating the purpose of using a datetime library;
• Temporal.PlainDateTime.from() has the right design, as it accepts an object like { year, month, day, hour, minute };
• so then all we need to do is creating an Instant from this PlainDateTime. This does not seem to be possible though? Other than through — once again — a datetime string or a timestamp in ns…?

This is silly! The use case here is super basic, and yet it’s not obvious (to me) at all how to address it.

I was expecting to be able to simply do something like: Temporal.Instant.from({ year, month, day, hour, minute });

Now the best I can come up with is: Temporal.Instant.from(year '-' String(month).padStart(2, '0') '-' String(day).padStart(2, '0') 'T' String(hour).padStart(2, '0') ':' String(minute).padStart(2, '0') 'Z'); //