What type of TAF indicates its issuance time by the code '221630Z'?

The code '221630Z' in a TAF (Terminal Aerodrome Forecast) denotes the specific day and time the forecast was issued. The first part of the code '22' refers to the day of the month, indicating the TAF was issued on the 22nd. The '1630' indicates the exact time of the issuance, specified in Zulu time (UTC), which translates to 16:30 hours. Therefore, the correct interpretation of the code is that the TAF was issued on the 22nd at 1630 Zulu time. This understanding is critical for pilots and aviation personnel when evaluating the relevance of weather information to their operations. Other options misinterpret the day or time, leading to incorrect conclusions.