[steven777400]

The as-of time is in the METAR. It's the block immediately following the station identifier, e.g. 172054Z means the 17th of the month at 20:54 Zulu. That's the time of observation.

You're right that the TAF doesn't indicate the time the forecast was published (although usually it's assumed to be the first hour of the forecast).

If you meant instead, as-of meaning "when the data was loaded", that's true... Not shown. I have the METAR ages turn red when they hit an hour (normally they are issued every hour) as a "clue" to the user to refresh. But certainly I could be more explicit.

[presumeaway]

> If you meant instead, as-of meaning "when the data was loaded", that's true... Not shown. I have the METAR ages turn red when they hit an hour (normally they are issued every hour) as a "clue" to the user to refresh. But certainly I could be more explicit.

Correct, that's what I'm talking about.