Cron Expression for Every Year: 0 0 1 1 *

Field by field

0 0 1 1 * reads: At 00:00, on the 1st, only in January.

@yearly and @annually are the same schedule.
A job that runs once a year is the one nobody remembers how to fix. Log loudly, and test it by running it by hand.

0 0 1 4 *Once a year on 1 April - the start of India's financial yearExplain it
0 0 1 1,7 *Twice a year, on 1 January and 1 JulyExplain it

0 0 1 1 * /path/to/job.sh

Runs in the machine's local timezone. crontab -e to edit.

on:
  schedule:
    - cron: "0 0 1 1 *"

Always UTC. Nothing more often than every 5 minutes, and runs can start late when GitHub is busy.

spec:
  schedule: "0 0 1 1 *"
  timeZone: "Asia/Kolkata"

timeZone needs Kubernetes 1.27 or later; without it the controller's zone applies, usually UTC.

@Scheduled(cron = "0 0 0 1 1 *")

Six fields: seconds come first. Days are written as names, which Spring and cron read alike.

0 0 0 1 1 ?

One of day-of-month and day-of-week must be ?. Quartz counts days 1-7 from Sunday, so names are safer than numbers.

cron(0 0 1 1 ? *)

Six fields, the last one the year. UTC unless the schedule sets a timezone. Days count from Sunday, as in Quartz.

[Timer]
OnCalendar=yearly
Persistent=true

Persistent=true runs a job that was missed while the machine was off, once it is back.