When does the chiyuv for birchas hatorah start? I work transcribing Torah shiurim and sometimes I work after chatzos at night. Do I need to say birchas hatorah after chatzos or can I wait till morning?
The chiyuv of birkas hatorah starts when you start a new day. If you are continuing your day after chatzos at night you do not say birkas hatorah again, because we only say a new birkas hatorah by a new day. If however you went to sleep for the first half of the night and now you woke up for the day, then you would say birkas hatorah now.
Shulchan Aruch O:CH 46-12, M:B 46-29.