Mumbai is 11.5 hours ahead of Calgary

There is no standard 8-to-6 overlap. Someone joins early or late.

With 11.5 hours between them, Calgary and Mumbai have no overlap during standard business hours — by the time one team logs on, the other has logged off. The usual fix is an early start for Calgary or a late finish for Mumbai — pick whichever team has more flexibility. Bear in mind Calgary shifts for daylight saving while Mumbai stays fixed — recheck these hours after each clock change.