Riwayat perubahan "is this month earlier than that month in the year?" (Z16542)
Seleksi Diff: Tandai kotak radio tingon revisi giot mambandingkon dohot pisat enter sanga tombol naitoru.
Legend: (sonnari) = parbedaan dohot revisi tarbaru, (cimak) = parbedaan dohot revisi naparjolo, m = pengeditan menek.