The Canada Revenue Agency’s (CRA) NETFILE service for the filing of individual income tax returns for the 2017, 2018, 2019, 2020 and 2021 tax years is available 21 hours each day. The hours of service in different time zones are as follows:

Pacific time                          3:00 a.m. to midnight

Mountain time                      4:00 a.m. to midnight

Central time                         5:00 a.m. to 2:00 a.m.

Eastern time                        6:00 a.m. to 3:00 a.m.

Atlantic time                         7:00 a.m. to 4:00 a.m.

Newfoundland time              7:30 a.m. to 4:30 a.m.

More information on the NETFILE service can be found on the CRA website at https://www.canada.ca/en/revenue-agency/services/e-services/e-services-individuals/netfile-overview.html.