Today Sherrie Swafford
Today means "the current day", so if you're asking what day of the week it is, it can only be in present tense, since it's still that day for the whole 24 hours. Sep 8, 20212) this answer, while helpfully giving former versions of 'today', is in no way actually addressing the op's question of why 'to', since the ostensible meaning of 'to' doesn't make literal. 3 “earlier today” is a totally correct way to refer to a point in time between the beginning of the day and the current time.
No, "as of" can mean both - 1) as of today, only three survivors have been found. 2) as of today, all passengers must check their luggage before boarding the plane. Nov 20, 2014the 2002 reference grammar by huddleston and pullum et al., the cambridge grammar of the english language, would consider words like yesterday, today, tonight, and tomorrow as.
Feb 29, 2016two other options (in addition to "as from today," "from today," and "effective today") are "beginning today" and "as of today." these may be more u.s.-idiomatic forms than british-idiomatic. Mar 28, 2020no meetings scheduled today vs no meetings scheduled for today. By the end of today by the end of the day my context is a promise to send an email today (i.e., before tomorrow).