Parsing date and time in RFC-3339 / ISO-8601 format in Go

Hello everyone! I just started learning Go and encountered a problem parsing a date and time string. I need to process data from a JSON API where dates come in the format "2023-12-25T15:30:00Z" or "2023-12-25T18:30:00+03:00" (this seems to be RFC-3339 or ISO-8601). \n\nI know that Go has the `time` package with the `time.Parse` function, but I can't figure out which format template to specify. I tried something like `"2006-01-02T15:04:05Z07:00"`, but I get errors. Here is my code:\n\n```go\npackage main\n\nimport (\n\t"fmt"\n\t"time"\n)\n\nfunc main() {\n\tdateStr := "2023-12-25T15:30:00Z"\n\tlayout := "2006-01-02T15:04:05Z07:00"\n\tparsedTime, err := time.Parse(layout, dateStr)\n\tif err != nil {\n\t\tfmt.Println("Parsing error:", err)\n\t\treturn\n\t}\n\tfmt.Println(parsedTime)\n}\n```\n\nIt gives an error: `parsin