Oh, sure. You remember the incarceration date of Porn Clown over here but not your own son's birthday!— Debbie Day.

Debbie Day is Julian Day's estranged wife. She makes her first and currently the only appearance in "Til Death Do Us Part" where she along with her son after visiting Calendar Man while he is in Arkham Asylum.

She is frustrated by how he knows the exact amount of days that Harley Quinn has been in Arkham for, yet has forgotten what his son's birthday is.

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