How To Use The Calendar Charts (PDF) - Torah Times Home Page

The LAG time between sunset andmoon set in minutes. This says howmany minutes one has to see the newmoon after sunset. One will have towait at least 20 minutes.Bernard Yallop’s Q-test for the moonand interpretive message “Easilyvisible.” Yallop worked for the BritishNautical Office.The character of the new moon for thismonth is shown here. The messagesvary, saying a chance of -1 day +1 day,none at all, or whether eye witnesseswill be needed to confirm a close casewith the new moon. In the odd caseswhere witnesses cannot confirm a closecase new moon, I issue a correctedchart to agree with the witnesses.Yallop’s test for the previous day, andinterpretive message.