Timezone in watcher

I have created a watcher to send business dashboards to clients . Elasticsearch watcher supports UTC and the requirement is reports should receive at 8 am first day of every month. I forgot about UTC when creating below watcher and morning 8 am i checked why i haven't received the mail then i realised that elastic watcher support UTC. I come to know timezone is there in version 8.18 and upgradation we are not planning as of now. Could you please advise how to provide timezone or any other way i can send reports to client at 8 am first day of every month .

Elastic version : 8.16

PUT _watcher/watch/030bd58e-f07e-4694-acc6-ff6afd1daad3
{
"trigger": {
"schedule": {
"cron": "0 0 8 1 * ?"
}
},

The docs indicate that UTC is the default but you can change it.

That was only added in 8.18 though. I don't think that there are any options for 8.16 other than upgrading (which would be a good idea anyway).

Ah thanks Keith, I didn't know we'd added any features to Watcher for a while!

Yep 8.16 is unmaintained these days, you need to be on 8.19 at least.