depending on the time and circumstances
A set phrase used to express that something may or may not happen based on the situation at a given moment. Often implies a conditional or tentative stance.
Depending on the time and circumstances, we may change the plan.
Depending on the time and circumstances, my reply might be delayed.
A compound phrase from 時 (time), 場合 (circumstances), and によって (depending on). The exact historical origin as a set expression is uncertain.