Query to modified date in tasks API get the error with timestamp

I’m getting this error:
Timestamp must be in ISO-8601 (yyyy-mm-ddThh:mm:ss+zzzz) format, not: 2020-10-03T10:39:39 00:00

I’m making a query for the last tasks modified in 5 hours. The modified date in PHP that I’ve used is this:
$fromdate = ( new DateTime( ‘-5 hour’ ) )->format( ‘c’ );

But it gets the error mentioned before.
How could i make the date with ISO8601?


The easiest is to convert it in UTC in your app. and send it in utc followed by “Z”, like

In your sample, it also looks like there’s a space instead of a “+” between seconds and timezone offset.

it’s strange becouse I’m sending already with + but gives the error. I’m trying the Z one. Thanks!