OpenSearch/docs/en/watcher/trigger/schedule/monthly.asciidoc

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[[schedule-monthly]]
==== Monthly Schedule
A <<trigger-schedule, `schedule`>> that triggers at a specific day and time
every month. To use the `monthly` schedule, you specify the day of the month and
time (or days and times) when you want the scheduler to start the watch execution
with the `on` and `at` attributes.
You specify the day of month as a numeric value between `1` and `31` (inclusive).
Times are specified in the form `HH:mm` on a 24-hour clock. You can also use the
reserved values `midnight` and `noon` for `00:00` and `12:00`.
===== Configuring a Monthly Schedule
To configure a once a month schedule, you specify a single day and time with the
`on` and `at` attributes. For example, the following `monthly` schedule triggers
on the 10th of each month at noon:
[source,js]
--------------------------------------------------
{
"trigger" : {
"schedule" : {
"monthly" : { "on" : 10, "at" : "noon" }
}
}
}
--------------------------------------------------
NOTE: You can also specify the day and time with the `day` and `time` attributes,
they are interchangeable with `on` and `at`.
===== Configuring a Multiple Times Monthly Schedule
To configure a `monthly` schedule that triggers multiple times a month, you can
specify an array of day and time values. For example, the following `monthly`
schedule triggers at 12:00 PM on the 10th of each month and at 5:00 PM on the
20th of each month:
[source,js]
--------------------------------------------------
{
"trigger" : {
"schedule" : {
"monthly" : [
{ "on" : 10, "at" : "noon" },
{ "on" : 20, "at" : "17:00" }
]
}
}
}
--------------------------------------------------
Alternatively, you can specify days and times in an object that has `on` and `at`
attributes that contain an array of values. For example, the following `monthly`
schedule triggers at 12:00 AM and 12:00 PM on the 10th and 20th of each month.
[source,js]
--------------------------------------------------
{
"trigger" : {
"schedule" : {
"monthly" : {
"on" : [ 10, 20 ],
"at" : [ "midnight", "noon" ]
}
}
}
}
--------------------------------------------------