since

SINS

meaning in plain English

Starting at a time in the past until now.

Since = 'since' – picture a line that began years ago and keeps going to now, like a road you’ve been driving since sunrise.

for example

It has been two days since I last ate.

If you left home an hour ago, you’ve been gone since then. Why does that matter? Because it tells us how long something has been true up to right now.