Gematria Calculation Result for code is her birthday j m on Reversed Simple

This is calculated by summing each letter's value: c(24) + o(12) + d(23) + e(22) + (0) + i(18) + s(8) + (0) + h(19) + e(22) + r(9) + (0) + b(25) + i(18) + r(9) + t(7) + h(19) + d(23) + a(26) + y(2) + (0) + j(17) + (0) + m(14).