Can't seem to figure out how to enter this :/ Is it possible?
unfortunately, such date format is not supported by Todoist (the complete list of supported dates can be found here: http://todoist.com/Help/timeInsert ), but thank you for your feedback, we appreciate it and will consider adding it in future development.
You're welcome to vote for this request in out Votebox:
For now, as a workaround, you could use the following date:
every 61 days starting 6. feb