My husband applied July 7th 2019
Received approval letter -January 8th 2020
Documents sent - January 9th 2020
Invitation received today 18/02/2020 dated the 14/02/2020.
Ceremony March 3rd at 2.30PM.
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No I haven't posted a timeline yet. But my husband applied for his citizenship on July 7th 2019. Got his acceptance letter on January 7th, so exactly 6 months and are waiting for a letter of invitation for a ceremony.