Answer:
January 10
Step-by-step explanation:
According to the revenue recognition principle of accrual accounting, revenue must be recognized when the earning process is completed. In this case, the earning process was completed on January 10 when the services were performed. The related cash inflows are not relevant at the time of considering service revenue.
the journal entries should be:
January 10, 202x
Dr Accounts receivable XY
Cr Service revenue XY
January 20, 202x
Dr Cash 0.5XY
Cr Accounts receivable 0.5XY
February 24, 202x
Dr Cash 0.5XY
Cr Accounts receivable 0.5XY